Trivia: A woman who unquestionably owes her dark, sensual allure to her Croatian ancestry, Canadian actress Stana Katic achieved fame with multi-episode appearances on the prime-time cop drama The Shield, the hit counterterrorism thriller 24, and the popular serial drama Heroes (as Hana Gitelman, a character who can wirelessly connect to and interact with the Internet using only her mind). Katic scored her first big-screen coup in 2007 when she was cast as Jenny in legendary writer/director Robert Benton's gentle ensemble drama Feast of Love. She landed a part in the James Bond film Quantum of Solace in 2008, but it was 2009 when she landed a leading role on Castle, a series that built a loyal following. She parlayed the show's success into parts in the feature films For Lovers Only, Truth About Kerry, and The Double.

Trivia: Born in Alberta, Canada, in 1971, Nathan Fillion took his acting ambitions to the United States when he moved to New York in 1994 to portray Joey Buchanan on the ABC soap opera One Life to Live. Having previously appeared in a single TV movie, Ordeal in the Arctic, Fillion's acting career had taken a backseat to his plans to be an English teacher. His three-year stint on the long-standing daytime TV staple, however, changed his focus in a big way. When his time on One Life to Live was up, the 27-year-old actor relocated to Los Angeles to assume a regular role on the sitcom Two Guys, a Girl, and a Pizza Place. Shortly afterward, he made a memorable appearance as the "wrong Ryan" in Steven Spielberg's WWII epic Saving Private Ryan. He also made appearances on The Outer Limits, King of the Hill, Pasadena, and other projects. It was in 2002, however, that he assumed the role that would make his career. Buffy the Vampire Slayer creator Joss Whedon selected Fillion to portray rugged captain Mal Reynolds for his new sci-fi/Western series Firefly. The show found a rabidly loyal cult fan base, as well as incomparable critical praise, but tragically, failed to find the wide audience that Fox had been hoping for. The show was canceled after only 11 episodes, but Fillion had reached a level of familiarity with the public that most actors never hope to achieve. He reprised the role of Mal in 2005 for the feature-film adaptation of Firefly, Serenity, to the delight of fans. In 2006, Fillion stayed on the cream of the fringe with the much anticipated horror film Slither. Starring alongside Elizabeth Banks, the actor stole the show with his humorous, low-key performance. For his next project, he signed on to act alongside Keri Russell in the romantic comedy Waitress. When the writer's strike hit, Fillion teamed with his old collaborator Joss Whedon to star in the direct-to-the-web musical miniseries Dr. Horrible's Sing-Along Blog. In 2009 he landed the title role on the ABC series Castle, and took a small role in the dark superhero comedy Super in 2010.

Trivia: Susan Sullivan is an Emmy-nominated actress who has proved equally adept at drama or comedy. She is best known for her eight years portraying Maggie Gioberti on the television series Falcon Crest, a prime-time network soap opera in a vein similar to that of Dallas and Dynasty, but she has also shown her comedic skills on sitcoms such as It's a Living and The George Carlin Show. Born Susan Michaela Sullivan in New York City in 1942 (some sources say 1944), she put herself through college by working as a Playboy bunny in the early '60s. Indeed, Sullivan was among the first Playboy bunnies employed by the newly opened Playboy Club in New York; as she has recalled in interviews, this was a most intellectually impressive and ambitious array of women, somewhat different from what the Playboy bunnies subsequently became, many of them aspiring to careers in law and other professions, and financing their educations by working at the club. Her television career began when she joined the cast of the daytime drama Another World in the role of Lenore Curtin, who she portrayed for four seasons. Sullivan based her career in New York, and was appearing in an off-Broadway play when she was spotted by an agent who offered to represent her if she moved to Hollywood. She accepted and thus began her career in prime-time television. Sullivan (who was sometimes billed as Susan J. Sullivan early in her career to distinguish her from another late-'60s actress named Susan Sullivan) appeared on television series such as Medical Center, McMillan & Wife, Kojak, and Petrocelli during the early '70s before landing the role that would establish her acting credentials, as Peter Strauss' lover in Rich Man, Poor Man--Book II (1976), which earned her an Emmy nomination. That same year, she moved into feature films, playing opposite Charlton Heston in Jack Smight's feature film Midway; she only had ten minutes of screen time in the movie, but hers were some of the best and most dramatically involving scenes in a movie that was otherwise largely devoid of character development or depth. Her sequences were used exclusively for the two-part television version of the movie, which means that theatrical audiences never saw her; Sullivan's scenes were missing from every home video version of the film until the October 2001 DVD reissue of Midway, which contained her footage. She spent most of the rest of the '70s in good guest-starring roles on series such as Taxi (where, in the episode "What Price Bobby," she proved herself capable of getting laughs and being sexually provocative at the same time, portraying an amorously predatory theatrical agent), and she turned in an exceptional dramatic performance in the pilot film for The Incredible Hulk, portraying a research scientist and friend of stricken hero David Banner (Bill Bixby). Her star continued to rise when she was cast in the lead role, as a gynecologist, in the made-for-television feature Having Babies and a sequel, which led to Sullivan playing the lead role in the subsequent ABC network series of the same name. From there, she was cast in the sitcom It's a Living, playing the most mature and sensible member of a group of waitresses at an upscale restaurant. It was after leaving It's a Living in 1981 that Sullivan earned the lead role of Maggie Gioberti on the drama Falcon Crest, which she played for eight seasons. Since leaving that series in 1989, a year before the end of its run, Sullivan has continued to act in both comedy and drama, and appeared on television on behalf of various charitable causes, as well as serving as the commercial spokesperson for Tylenol. She was a co-star on the George Carlin Show and has appeared on sitcoms such as Dharma & Greg. In the 2st century she found a regular gig voicing Hippolyta on the animated Justice League series, and enjoyed recurring roles on both The Drew Carey Show and Castle.

Trivia: Started dancing and gymnastics lessons at age 3. Starred in a series of local commercials and print ads in her youth. At age 6, she performed in a local ballet production of The Nutcracker. Took acting classes from retired director/producer Martin Beck. Was discovered by director Linda Seto at a summer film camp in Dallas, TX, and was encouraged to move to Los Angeles. Made film debut in a bit part in the 2007 comedy Walk Hard: The Dewey Cox Story.

Trivia: Actress Tamala Jones launched her career as a model, appearing in magazine ads and television commercials, before landing her first acting job on an episode of the preteen sitcom California Dreams, but her interest in the craft goes back to early childhood, when Jones and her cousin would stage backyard shows. Los Angeles-born and raised, Jones first studied drama in the sixth grade. As a young woman, she guest starred on series ranging from The Fresh Prince of Bel-Air to E.R. to The Wayans Brothers. She had her first regular television role playing a student in the ABC network's short-lived drama Dangerous Minds. Jones entered feature films with a small role in How to Make an American Quilt (1995) and had her first starring film role in Booty Call (1997). In 1998, Jones starred in the short-lived NBC summer replacement sitcom For Your Love. After appearing in Blue Streak and The Wood the following year, Jones began to gain even more momentum in 2000 with roles in Ice Cube's Next Friday and the Tim Meadows SNL vehicle The Ladies Man. Jones would later share the limelight with a talented cast in Kingdom Come in 2001. She continued to work steadily in a variety of projects including Head of State, Daddy Day Camp, Who's Your Caddy?, and What Love Is before being cast on the television show Castle as Lanie Paris. In 2010 she starred in and co-produced the romantic comedy 35 & Ticking.

Trivia: Started acting when he was 10 years old. First became known for his role as Antonio on the television series Moesha. Spent eight years in the military and participated in Operations Just Cause and Desert Storm. Finished a college degree in theater while in the Air Force. Nominated for a 2000 ALMA Award for his role on ABC's Sabrina the Teenage Witch. Has worked closely with several charities that help veterans, including the Wounded Warrior Fund and Puppies Behind Bars.

Trivia: Is the son of a drama teacher. Has been in more than 50 plays, and is well known for his stage work in the Los Angeles area. Did voice-over work in the 2002 Activision video game Soldier of Fortune II: Double Helix. Has had many guest roles on numerous television shows, including CSI: Miami, Close to Home, Crossing Jordan, Charmed, JAG and Cold Case. After his General Hospital character, Dr. Ian Devlin, was killed off, he went on to play another doctor, Dr. Chris Ferlinghetti, on Army Wives.

Trivia: Appeared with stage and screen legend Ruby Dee in a 2001 off-Broadway production of Bridgette Wimberley's Saint Lucy's Eyes. In 2005, cofounded theater company Three Chicks Theatre, which produced Andrea Lepcio's One Nation Under in 2008. Has written for and acted in a Web series called Callbacks, produced by Unlimited Ceiling, a company she cofounded with Seth Yaitanes.

Trivia: Nominated for the 2000 Joseph Jefferson Award for Actress in a Revue, for her performance in the Second City Theatre.. Formed comedy duo WeirDass with husband Robert Dassie. Performed as part of the MADtv ensemble between 2000 and 2006. Performed a one-woman show Sloedeatha, TX at the Comedy Central Stage. Regularly performs with the Second City Improv Troupe.

Trivia: Originally went to college to study law and political science. Played the archangel Michael on both Hercules: The Legendary Journeys and Xena: Warrior Princess. Has played a major role in the season-ending cliffhangers for popular shows such as Crossing Jordan, Without a Trace and Outrageous Fortune. Worked as a writer and was a lead character on Street Legal, a courtroom drama series set and filmed in New Zealand. Was made a full-time series regular on V after guest-starring in the first season.

Trivia: Comedian and actress Aubrey Plaza honed her skills with the renowned Upright Citizen's Brigade comedy troupe beginning in 2004, as well as performing standup at places like the Laugh Factory. She graduated from New York University's Tisch School of the Arts in 2006, and soon began making the transition to the screen, appearing as Daisy in the 2009 Judd Apatow comedy Funny People, and as Robin on the series Mayne Street. In 2009, Plaza joined the cast of the comedy series Parks and Recreation, acting alongside Upright Citizen's founding member Amy Poehler. Her performance as bored teenage intern April was a hit with audiences, and Plaza followed it the next year with a role in the quirky 2010 graphic novel adaptation Scott Pilgrim vs. the World. She appeared in Whit Stillman's Damsels in Distress, as well as the comedy Safety Not Guaranteed opposite the Duplass brothers.

Trivia: A theater star from a diverse background, Ruben Santiago-Hudson was born in Lackawanna, NY, in 1956. Growing up with a combination of Puerto Rican and African American descent yielded many life-shaping experiences for Santiago-Hudson, and after studying at Binghamton University, he went on to write, direct, and star in the acclaimed play Lackawanna Blues, in which he portrayed over 20 characters from his past. The thespian would continue to work on-stage, appearing in plays like Jelly's Last Jam and Seven Guitars -- for which he won a Tony -- and additionally transitioned to the screen, appearing in a large number of films like The Devil's Advocate and Honeydripper. In 2005, Santiago-Hudson adapted Lackawanna Blues into a miniseries produced by HBO, which met with critical acclaim and garnered several major awards for star S. Epatha Merkerson. In the following years, Santiago-Hudson would find success on the popular series Castle.