Trivia: Actor Mark Harmon is the son of football great Tom Harmon and 1940s film star Elyse Knox; he is the brother of Kris Harmon -- ex-wife of Ricky Nelson -- and uncle of Kris and Ricky's actress daughter Tracy Nelson; and finally, Harmon is the husband of Mork and Mindy star Pam Dawber. Harmon emulated his dad by playing football at UCLA, then followed in mom's footsteps by turning to acting; his first movie was 1978's Comes a Horseman. Most of Harmon's starring film appearances are easy to take but unmemorable, such as his lackadaisical high-school teacher in Summer School (1988). A baseball fan, Harmon was once part-owner of the minor-league San Bernardino Spirit, a team which figured prominently in his 1988 film vehicle Stealing Home. Harmon is best known for his work on 1980s series TV: he has co-starred in Flamingo Road and Moonlighting, and played the lead role of AIDs-stricken Dr. Bob Calswell on St. Elsewhere. TV would prove to be a source of success for the actor, and he would go on to star on such popular shows as Chicago Hope and NCIS.

Trivia: David McCallum's parents were both members of the London Philharmonic; his mother was a cellist and his father was first violinist. The young Scots-born McCallum himself planned to pursue a musical career after serving with the Royal West African Frontier Force, but decided instead upon acting. Following his studies at the RADA, McCallum entered films in 1957, where he was usually cast as a troublemaking street punk or callow junior officer. His first American film (albeit lensed principally in England) was Freud (1962), in which he played a profoundly mother-obsessed mental patient. McCallum became the rage of the teeny-bopper set when he was cast as cool-headed Russian secret agent Ilya Kuryakin on TV's The Man From UNCLE (1964-68). At one point, McCallum was receiving far more fan mail than the series' ostensible star, Robert Vaughn; he took advantage of his celebrity to launch a brief singing career, duetting with Nancy Sinatra on the 1966 UNCLE episode "The Take Me to Your Leader Affair." He also wrote the music and lyrics and sang the title song of his 1967 movie vehicle Three Bites of the Apple. Following UNCLE, McCallum had a handful of solid dramatic film roles before returning to the small screen in the short-lived 1975 series The Invisible Man. He continued to appear primarily in episodic television, although he occasionally could be glimpsed on the big-screen as well. Highlights include The Watcher in the Woods, Matlock, The Wind, Murder She Wrote, and The A-Team. The nineties began with a major part in the sleeper Hear My Song, before continuing in Healer, Law and Order, and Cherry. McCallum became a fixture on television yet again at the beginning of the 21st century when he was cast as Donald "Ducky" Mallard on CBS' drama NCIS, which was for a time the top-rated scripted drama on network television.A man of sundry outside interests, McCallum's range of expertise includes computers and small-arms weaponry. Once wed to actress Jill Ireland, David McCallum has since 1967 been married to Katherine Carpenter.

Trivia: Going under the name Pauley P., actress Pauley Perrette (born March 27th, 1969) first gained notoriety with an extended arc on the acclaimed ABC drama Murder One. She followed that with guest spots on such shows as The Drew Carey Show and Frasier before landing a gig as a regular (using her full moniker) on the short-lived Party of Five spin-off Time of Your Life. After that series bowed, Perrette could be seen in small capacity in the big-screen hits Almost Famous and The Ring. In 2003, she finally landed in a series with staying power. This time it was the JAG spin-off Navy NCIS, a CBS drama that cast Perrette in a lead role alongside Mark Harmon.

Trivia: Actor Sean Murray began filling up his resumé when he was just a young teenager, making small appearances in movies like Hocus Pocus and This Boy's Life. He continued to steadily wrack up small and midsized roles in films and on television until 2004, when he joined the cast of the series NCIS playing Timothy McGee. His stepsister, Troian Bellisario, has appeared in NCIS as Murray's character's sister.

Trivia: A graduate of the famous School for the Performing Arts, actor Rocky Carroll continued his studies at the Conservatory of Theatre Arts at Webster University before moving to New York in the mid-'80s to try his hand at a professional acting career. He soon found success with the Shakespeare on Broadway series, and cultivated a flourishing career on-stage. Carroll also branched into screen acting, with recurring roles on Roc and Chicago Hope, and in movies like Crimson Tide, Born on the Fourth of July, and Yes Man.

Trivia: A graduate of Colorado's Niwot High School, actor Brian Dietzen gravitated to drama at eight years old, when he caught the acting bug from an elementary school play; in time, he extended his stage activities into high-school productions, and attended the University of Colorado at Boulder as a theater major in that institution's B.F.A. program. Under the mentorship of Sean Kelley, Dietzen formally trained in theatrical mainstays -- from Waiting for Godot to Equus; so successful were his efforts in these productions that it prompted him to join the Colorado Shakespeare Festival after graduation, and then to make the big leap to Los Angeles. Dietzen scored his first major coup in L.A. by signing on for a regular role in the short-lived WB series My Guide to Becoming a Rock Star, and then landed a small part in the American Idol spin-off movie From Justin to Kelly (2003). The actor is best known, however, for his recurring series role as Jimmy Palmer, assistant lab technician to Donald "Ducky" Mallard (David McCallum), on the popular CBS procedural thriller NCIS. On the side, he remained extremely active in stage work.

Trivia: Dropped out of college and took public speaking classes to help further her career. At the premiere of Gone (2012) she admitted she's always had a fear of being kidnapped. Was cast in NCIS in 2013 as a replacement for the departing Cote de Pablo; she was promoted to a series regular before her first episode aired.

Trivia: In his role as eager-to-fit-in exchange student Fez on the enduring and popular Fox sitcom That '70s Show, actor Wilmer Valderrama mangled the popular lingo of the eponymous decade with gleeful abandon. Though removed from his small-screen persona, the handsome actor can give the impression of a young Benicio Del Toro. His dorky and personable charm as Fez endeared him to television audiences, making him one of That '70s Show's defining personalities. Born January 30th, 1980, Valderrama is a Miami native whose family relocated to Venezuela when he was three years old; the aspiring actor would eventually return stateside to pursue a career in the entertainment industry. Valderrama joined the cast of That '70s Show shortly before finishing his high-school education at William Howard Taft High School in 1998, and three short years later, the television mainstay made his feature debut by taking to the diamond with a supporting role in the romantic teen comedy Summer Catch. Guest appearances on Grounded for Life and That '70s Show co-star Ashton Kutcher's hidden-camera prankster series, Punk'd, were quick to follow, and in 2003, Valderrama essayed the role of DJ Keoke in the flashy true-crime drama Party Monster. Based on the exploits of murderous club-kid Michael Alig, the film offered Valderrama an opportunity to truly separate himself from his popular small-screen persona. With That '70s Show still going strong in 2004, the popular television star's voice could also be heard in the animated children's film Clifford's Really Big Movie. 2006 found the actor playing a small supporting role for the scathing message movie Fast Food Nation, and took on the role of Detective Efrem Vega for the NBC television series Awake.Valderrama continued to concentrate on TV, booking guest arcs on shows like Suburgatory and Raising Hope before settling into more stable work with regular gigs on From Dusk till Dawn: The Series and the short-lived Minority Report series. In 2016, he joined the cast of NCIS for the 14th season of the show.

Trivia: Aspired to be an actor from the age of 5. Moved to London at the age of 17 to pursue his acting career. Was homeless for a short time while searching for work as an actor. Appeared in numerous British television series, including Law & Order: UK, Doctor Who, The Cut and Doctors. Nominated for BAFTA's Screen Nation Award for Best Emerging Talent in 2010. In 2013, moved to Los Angeles in hopes of furthering his acting career. Starred in a 2015 TV commercial for Lexus.

Trivia: Born in Pennsylvania c. 1967, Maria Bello attended Villanova University as a political science major, but acting ability - evident from an early drama class - altered her career plans. Following graduation, Bello honed her acting skills in a number of New York theater productions before she broke through to the public as one of the leads in the short-lived TV spy comedy Mr. and Mrs. Smith (1996). Bello gained broader primetime exposure as Dr. Anna Del Amico on NBC's blockbuster ER during the 1997 season and segued into films with her performance as recovering junkie Ben Stiller's confidante in the film-a-clef Permanent Midnight (1998), adapted from Jerry Stahl's harrowing book.Bello scored her first pop hit as Mel Gibson's beautiful cohort in the harsh crime drama Payback (1999). Poised to potentially become one of the select group of actors who transition smoothly from television to film, Bello co-starred as one of the bottle-tossing, bar-stomping babes in charge of the titular drinking establishment in the Bruckheimer-produced hellraiser Coyote Ugly (2000). When Coyote Ugly failed to live up to box office hopes, Bello starred as Suzi Loomis in Bruce Paltrow's Duets, and as Ruth Harkness in the IMAX feature China: The Panda Adventure (2001), based on her real-life experiences with the eponymous creatures. Bello scored a bona fide critical, if not financial, hit with Paul Schrader's biopic about slain Hogan's Heroes star Bob Crane, Auto Focus (2002). As Crane's co-star and second wife Patricia, Bello holds her own opposite Greg Kinnear's bravura performance as the nymphomaniacal Crane, evoking the complex emotions of a spouse who accepts yet ultimately cannot contend with her husband's desires.A year after Auto Focus, Bello would score even bigger with the critics with a starring role alongside William H. Macy in the gritty Vegas romance The Cooler. As the cocktail waitress who falls for Macy's sadsack ne'er-do-well, Bello brought a sense of extreme realism to her character. The film netted her a Best Supporting Actress nomination from the Screen Actors Guild and a runner-up prize from The National Society of Film Critics.In early 2004, Bello appeared as Johnny Depp's estranged wife in the Stephen King adaptation The Secret Window, and in John Sayles' well-received political thriller Silver City. Though subsequent appearances in the fairly forgettable Assault on Precinct 13, The Dark, and The Sisters followed in 2005, Bello's Golden Globe-nommed performance as an unassuming housewife who married into mystery in A History of Violence, coupled with her prominent performance as a determined alcohol lobbyist in the critically-acclaimed Thank You for Smoking, helped to get her back in the good graces of critics and end the year on a decidedly high note. When 2006 arrived, Bello joined Nicolas Cage, Michael Pena, and Maggie Gyllenhall in World Trade Center, Oliver Stone's docudrama/survival picture that recounted the experiences of two Port Authority firefighters trapped beneath the rubble of the destroyed buildings. Bello joins the cast of the same year's Flicka, adapted from the seminal children's novel by Mary O'Hara (and incarnated decades prior as the movie and TV series My Friend Flicka) , alongside Alison Lohman and country singer Tim McGraw.Bello had a lead part in Alan Ball's feature film directorial debut Towelhead in 2007, and tackled the indie horror film Downloading Nancy the next year. In 2010 she scored a small part in the Adam Sandler comedy Grown Ups as well as major parts in a couple of dramas - The Company Men and Beautiful Boy.She next returned to television, taking the lead role in the NBC remake of the British series Prime Suspect in 2011. The show was cancelled after only 13 episodes, but Bello quickly booked another television role, in the second season of Fox's Touch, opposite Kiefer Sutherland. That show was also canceled after that season, and Bello returned to film, reprising her role in Grown Up 2 in 2013.Active in social causes as well, Maria Bello co-founded the Harlem not-for-profit arts and education program, Dream Yard Drama Project for Kids.

Trivia: A fiercely independent crooner who answered to no one and once paid the price for his stubbornness by being hurled through a Latin Quarter plate-glass window, popular singer Alan Dale made television history when the immensely popular Alan Dale Show became the first television program to be kinescoped for viewing across the country. Born the son of an Italian comedian in 1925, Dale began his career at the tender age of nine when the eager youngster bolted on-stage on an open invitation from the audience. Later graduating from Brooklyn's Lafayette High School, the singer was merely 20 years old when his popular television series debuted on the Dumont Television Network in 1948. Later moving to CBS, the overworked singer would gain much attention when, at one point, he collapsed on-air from exhaustion and an ulcer. Though he lost his television shows due to an extended recovery period, Dale made a comeback with a little help from friend and Coral Records A&R chief Bob Theile. Going on to record such hits as "Cherry Pink and Apple Blossom White" and "Sweet and Gentle," Dale's legions of fans could later catch the singer in the 1957 film Don't Knock the Boat. Many believe that his refusal to accept the offers made to him by figures in the mafia underworld directly correlated with his sagging career, the incident at the Latin Quarter, and a deliberate disappearance from the spotlight. In April of 2002, Alan Dale died in New York following an extended illness.

Trivia: Born in 1996, Mary Matilyn Mouser built a career as a voice actor in films like Bambi II and the series Me, Eloise before gaining prominence in live-action projects. In 2007, she was cast as Mia on the CW family drama Life Is Wild. And though that particular series failed to take hold, Mouser still managed to remain a farmiliar fixture to television viewers by joining the cast of ABC's Body of Proof four years later.

Trivia: Los Angeles native Sasha Alexander honed her interest in acting with roles in school plays, but soon graduated to a professional career with roles on shortlived series like the drama Wasteland and the wild comedy Greg the Bunny, on which she shared an on-screen kiss with comedian Sarah Silverman. In 2003, Alexander took on the role of Agent Caitlin Todd on the series NCIS. She would play the role for many seasons to come, in addition to roles in movies like Yes Man and Love Happens, and other TV shows, like Rizzoli & Isles.

Trivia: Born in New York City on August 8th, 1968 and raised in Fairfield, CT, prolific film and television actor Michael Weatherly got his start on an episode of The Cosby Show before moving on to carve out an impressive career on screens both large and small. While many television viewers would recognize Weatherly from walk-on roles in such popular television series as Charmed and Ally McBeal, it was the actor's controversial age-disparity romance with Dark Angel co-star Jessica Alba that got tongues wagging around Tinseltown back in 2001. He could be seen opposite Alba on that sci-fi program throughout its two-season run (2000-2001). Later, Weatherly portrayed actor Robert Wagner in the made-for-television drama The Mystery of Natalie Wood before revealing a deeply personal secret about his onscreen girlfriend in Her Minor Thing. In 2003, Weatherly landed his most regular television role to date, as a Naval criminal investigator on NCIS.

Trivia: Lead actress, onscreen from the late '80s.

Trivia: Born in Chile but raised in Miami, actress Cote de Pablo developed an impressive resumé on both stage and screen. In 2001, she appeared in a New York City Public Theater production of Measure for Measure, and in 2005, she made her Broadway debut in The Mambo Kings. In 2006, she joined the cast of the series NCIS, playing Mossad operative Ziva David. She made her big-screen in the western The Last Rites of Ransom Pride.

Trivia: Played clarinet in his high school band and sang in the choir. Theater debut was in a 1970 college production of Shakespeare's The Taming of the Shrew. Taught an acting class at the Georgia State Penitentiary in the early 1970s. Made his big-screen debut in the 1989 thriller Black Rainbow. Has had recurring roles as an inmate on Prison Break and a former Naval Criminal Investigative Service agent on NCIS.

Trivia: Possessing a dark but earthy beauty and a natural, winning smile, actress Rena Sofer has found notable small-screen success in such series as Melrose Place, Just Shoot Me, and Coupling after spending the majority of the 1990s in an Emmy-winning role on the daytime soap opera General Hospital. As the millennium turned, so did Sofer's cinematic aspirations, with keen-eyed movie lovers spotting her in such feature efforts as Traffic (2000) and March (2001). An Arcadia, CA, native, Sofer relocated to Pittsburgh when her Orthodox Jewish rabbi father and psychology teacher mother divorced. Spotted by a New York talent agent at the age of 15, it wasn't long before Sofer was appearing on the daytime drama Loving and landing roles on such small-screen efforts as Herman's Head and Saved by the Bell: Hawaiian Style. In 1992, she made her big-screen debut with a small role in Sidney Lumet's A Stranger Among Us with Melanie Griffith. Beginning a four-year run on General Hospital in 1993, Sofer would simultaneously appear in numerous made-for-television features before beginning her year-long run on Melrose Place in 1998. She made a notable leap back to the big screen with a small role in the 2000 comedy Keeping the Faith, and after following up with Traffic, Sofer settled back into sitcom life with a high-profile guest-starring role on Ed. In the 2002 made-for television remake of Carrie, her part as a sympathetic high school teacher proved a highlight of the otherwise forgettable effort, and in 2003, she headed the cast of Coupling, the highly anticipated American remake of the popular U.K. sitcom.

Trivia: Grew up in Richmond, Virginia and danced professionally with the Richmond Ballet.Focused on French and Postcolonial works while studying Literature at Harvard University.Served as the publicity manager for the Hasty Pudding Theatricals in 2003.Is fluent in French.Appears in the music videos for Counting Crows' "You Can't Count on Me" and Bon Jovi's "What Do You Got?"

Trivia: Actress Lindsay Price began her career when she was just a little girl, appearing in commercials including a Toys "R" Us ad in which she sang the toy store's famous jingle. Price eventually grew into a young woman, attending the Art Center College of Design in Pasadena, CA, but her interest in appearing onscreen only grew. She began making appearances on shows like Boy Meets World by the time she was 17 and two years later, in 1995, she scored a recurring role on the soap opera The Bold and the Beautiful. Then, in 1998, she joined the cast of the night-time drama Beverly Hills 90210, which was beginning its tenth season. She brought a new, fresh energy to the series, leading to a string of appearances over the next few years, including a starring role on the American remake of the British series Coupling, as well as roles on Pepper Dennis and Lipstick Jungle. In 2009 she was cast in the short-lived TV series Eastwick, based on the popular novel and film The Witches of Eastwick. After welcoming a son with chef Curtis Stone in 2011, Price slowed down her acting work, though she still appeared in occasional guest spots on shows like Two and a Half Men and Hawaii Five-0.

Trivia: After debuting as the friend of Winona Ryder's character in the sentimental weepie Autumn in New York (2000), actress Liza Lapira landed bit parts in Tony Scott's feature Domino (2005); guest appearances on such series as Grey's Anatomy, Monk, and Law & Order; and recurring roles on such shows as Huff, Law & Order: Special Victims Unit, and NCIS. In 2008, Lapira ascended to supporting billing with a plum role as MIT student-turned-gambler Kianna in Robert Luketic's thriller 21. In the years to come, Lapira would appear on shows like Dexter, Dollhouse, and Traffic Light, and in movies like Crazy, Stupid, Love.

Trivia: Was raised by her single mother and lived alternately with her mother and grandmother. Acted in church events and community theatre before high school. /Looked to her mother and drama teacher, Miss Lillian Monkus, as role models. Was on the track team at school. Started to appear in adverts while studying at University of Illinois at Chicago, Illinois, United States. In 2002, moved to Los Angeles to further her career. Travelled to Johannesburg, South Africa, before filming Strike Back to learn hand-to-hand combat and various military techniques. Starred in the series, How to Get Away with Murder, 2016-2017.

Trivia: Began her career as a teen model on the show This Morning. Made her breakthrough on British television playing the role of Marjorie "Precious" Hudson in BBC soap opera Eastenders. Was the host of a scrapped American reality show called When Woman Ruled the World, which filmed in 2007, but never aired. Found it tough after moving to Los Angeles due to failed auditions and cancelled shows, and had to do bar work and waitressing to make ends meet. Founder of Extension Evolution, a company supplying premium hair extensions, in 2011. Was the first celebrity to be ejected from the island of Fiji on ITV's Celebrity Love Island in 2013 after being voted off by viewers, and has said she was glad to leave before the in-fighting and back-stabbing began. Has set up her own website, www.makeitamerica.com, to enable young starlets to make the transition from the UK to the USA.

Trivia: Starred as the title character in the original stage production of Cornelia, written by Mark V. Olsen, who penned the cable drama Big Love, in which she had the recurring role of Malinda. Her character in the 2006 Bobcat Goldthwait-directed comedy Sleeping Dogs Lie infamously performed a sex act (off camera) on a canine. Portrayed Anna Draper, wife of the real Lt. Don Draper, on four episodes of Mad Men. Odessa, her character in Lifetime's Devious Maids, wasn't in the original ABC pilot. Worked with a dialogue coach to hone a Russian accent for her role in Devious Maids.

Trivia: A Michigan native, clean-cut actor and television emcee Jeff Hephner broke himself in as an actor by performing in regional theatrical productions in the Great Lakes State and in Florida. He attended Ferris State University in Grand Rapids, MI, before debuting on film with a small supporting role in the 2000 Joel Schumacher period drama Tigerland and a bit part as a waiter in the 2002 comedy Maid in Manhattan. Hephner received his broadest exposure, however, with recurring roles on the television series The Jury (as attorney Keenan O'Brien), and a multi-episode stint as Matt Ramsey on the primetime, teen-oriented soaper The O.C. Meanwhile, Hephner made guest appearances on programs including House, Nip/Tuck, and Without a Trace. In 2008, Hephner signed for the lead role of Morgan Buffkin in the CW primetime drama series Easy Money. A role in the short-lived CW cheerleading drama Hellcats follwed in 2009, and two years later Hephner could be seen opposite Kelsey Grammer in the dark Starz crime drama Boss.

Trivia: While significant mainstream recognition has eluded Robert Patrick, with two notable exceptions -- he all but replaced David Duchovny in the waning days of The X-Files and admirably portrayed "the liquid metal cop guy" in Terminator 2: Judgment Day (1991) -- he has nonetheless built an impressive resumé with over 60 television and film appearances since the mid-'80s. The eldest of five children, Patrick didn't choose to pursue a career in acting until his mid-twenties, despite having a bona fide diva moment during a third-grade production of Peter Pan, for which he refused to wear the required green tights. Rather, after a successful stint as a linebacker for Bowling Green University, Patrick became a house painter and may have continued as such were it not for a serious accident in the waters of Lake Erie, where he nearly drowned. The accident served as a revelation of sorts for Patrick, who promptly quit his day job and moved from Ohio to Los Angeles. It took more than a few sacrifices -- a then 26-year-old Patrick lived in his car and tended bar for his major source of income -- but the young actor found himself playing small roles in various low-budget films, which he credited to his tough-looking exterior and motorcycle-riding abilities.Though Patrick spent most of the late '80s paying his dues, his breakout performance landed him opposite Arnold Schwarzenegger in director James Cameron's Terminator 2: Judgment Day. Patrick readied himself for the role of the T-1000 android in a rather unique fashion; in addition to martial arts, endurance, and strength training, he observed the movements of cats, eagles, and praying mantises. Odd as that may have sounded at the time, it certainly enhanced one of the most memorable roles in one of the most memorable films of the decade. After T2, Patrick was able to leave the world of B-movies and hold his own alongside some of the most established actors in Hollywood, including a second performance with Schwarzenegger in Last Action Hero (1993) and a more prominent role opposite Demi Moore in Striptease (1996). Patrick also expressed a fondness for martial arts films, and starred in both Double Dragon and Hong Kong 97 in 1994. However, it was his 1993 performance as a stoic regular-guy-turned-UFO-believer in Fire in the Sky that caught the attention of X-Files director Chris Carter. Carter immediately thought of Patrick when David Duchovny distanced himself from The X-Files, and, after auditioning 70-odd actors for the role of John Doggett, became determined to initiate Patrick into his long-running world of conspiracy theories and paranormal phenomena. To the surprise of fans and critics alike, Patrick was received quite well on The X-Files, and quickly found himself gracing the covers of many a genre magazine -- he was even anointed one of the Ten Sexiest Men of Sci-Fi by TV Guide.By the time The X-Files aired its last show, Patrick had developed a solid reputation within the industry; critics, fans, and co-stars alike praised him for his work ethic, personality, and consistent performances. Rather than fading into the scenery, Patrick starred as the mysterious Mr. Lisp in Spy Kids (2001), and later starred as a reclusive wilderness tracker in Pavement (2002). After making appearances in Richard Shepard's Mexico City (2002), Charlie's Angels: Full Throttle (2003), and the sci-fi spin-off series Stargate: Atlantis, Patrick filmed director Jay W. Russell's Ladder 49 (2004). A memorable performance as Johnny Cash's distant father Ray in Walk the Line followed in 2005, with a subsequent role as a security expert in the Harrison Ford thriller Firewall preceeding a return to weekly television in the David Mamet-created series The Unit in 2006. Later in 2006, Patrick would incur the wrath of WWE superstar John Cena with his role as a ruthless kidnapper in the explosive action thriller The Marine. Patrick lives with his wife, Barbara, whom he married during the filming of T2, and their two children.