Trivia: Kaley Cuoco began modeling and acting at the tender age of six, when she was cast in the TV movie Quicksand: No Escape. Growing up in front of the camera, the young actress continued to appear as the requisite little girl in movies like Virtuosity and Picture Perfect until she was cast as teenage daughter Bridget on the sitcom 8 Simple Rules. TV would prove to be the actor's bread and butter, and she would go on to star on Charmed, 6Teen, and Monster Allergy, not to mention The Big Bang Theory, a show that earned her legions of fans as Penny, the hot neighbor of two geeky physicists (Johnny Galecki, Jim Parsons). Cuoco also continued to appear in films, though on a much smaller scale compared to her TV work. She appeared in a supporting role in the Easter film Hop in 2011, and played the female lead opposite Kevin Hart and Josh Gad in The Wedding Ringer in 2015.

Trivia: Born on a Belgian army base, curly brown-haired Johnny Galecki grew up in Chicago and started acting professionally at the age of 12. He made his feature film debut in 1988 as River Phoenix's little brother in A Night in the Life of Jimmy Reardon. He then assumed the role of Rusty Griswold in National Lampoon's Christmas Vacation, and gained his first regular role on a TV series as Robert Ulrich's son in American Dreamer. In 1991, he starred in the made-for-TV movie Backfield in Motion, co-starring the production team of Roseanne and Tom Arnold. The next year, Galecki joined the cast of Roseanne as Darlene's sensitive and put-upon boyfriend David Healy. He stayed on the show until its final season in 1997, although he wasn't on very much during its last few years. His other television credits include several guest appearances, leading roles in made-for-TV movies, and a part on the short-lived Head of the Class spin-off Billy. After Roseanne ended, he got back into features with small parts in I Know What You Did Last Summer, Bean, and Suicide Kings. He continued playing slightly effeminate sensitive males in The Opposite of Sex and Morgan's Ferry. After bit parts in Bounce, Playing Mona Lisa, and Vanilla Sky, Galecki played a leading role in the comedy thriller Bookies, which premiered at the 2003 Sundance Film Festival. In 2007 he landed the leading role in the sitcom The Big Bang Theory and it grew to be one of the most popular shows on TV, earning Galecki Emmy, Golden Globe, and Sag nominations in 2011 for his work on the show. He maintained his movie career in projects such as Hancock and In Time.

Trivia: First noticed by many viewers as Tim -- the Klingon-spouting "knight in training" involved with the mother of Mark (Peter Sarsgaard) in Zach Braff's gently observed comedy drama Garden State (2004) -- American actor Jim Parsons moved from this memorable debut into a sequence of periodic roles in U.S. features. These included Chris Terrio's urban ensemble drama Heights (2004), opposite Glenn Close and Elizabeth Banks, and Brad Silberling's comedy drama 10 Items or Less (2006), opposite Morgan Freeman and Paz Vega. His breakout success came when he was cast as uber-nerd Sheldon on The Big Bang Theory. His work on that show led to him scoring an Emmy win for Outstanding Lead Actor in a Comedy Series, and helped him earn small parts on the big screen in The Big Year and The Muppets.

Trivia: Though initially typecast in comedic roles -- including a small turn in Old School (2003), a contribution to Tracey Ullman in The Trailer Tales (2003), and work on MADtv -- American character actor Simon Helberg quickly branched out into diverse genres. He appeared as a CBS page in George Clooney's revered Edward R. Murrow biopic Good Night, and Good Luck., as a junior agent in Christopher Guest's For Your Consideration (2006), and in a recurring role on the Aaron Sorkin comedy drama Studio 60 on the Sunset Strip. In 2007, Helberg was cast in the regular role of Howard Wolowitz on the sitcom The Big Bang Theory, about a couple of nerdy physicists (Johnny Galecki and Jim Parsons) who struggle with women, and everything else outside the lab. In 2007, Helberg also made appearances in the comedies Mama's Boy and Walk Hard: The Dewey Cox Story. He played a young rabbi in the Coen brothers film A Serious Man (2009), and continued to make guest appearances on TV shows such as Kick Buttowski: Suburban Daredevil and Drunk History, while maintaining his regular status on The Big Bang Theory.

Trivia: Actor Kunal Nayyar first made a splash in Hollywood playing physicist Koothrappali on the series The Big Bang Theory, which debuted on CBS in 2007. In 2012 Nayyar voiced the character of Gupta in Ice Age: Continental Drift, and the following year he could be seen opposite Gina Gershon and Billy Campbell in the thriller, The Scribbler. In addition to his feature work Nayyar also co-wrote the critically acclaimed play Cotton Candy, which runs in New Delhi.

Trivia: Began her career as a comedian and had a one-woman show, The Miss Education of Jenna Bush, in which she played the daughter of former president George W. Bush. Co-wrote, directed and starred in the comedic short The Condom Killer. Toured with the political-satire group Gross National Product. Performs with The Realest Real Housewives show, in which comedians read transcripts from the Real Housewives franchise. Was a recurring guest star on series 3 of The Big Bang Theory before joining the cast as a series regular in series 4.

Trivia: Name means "water" in Hebrew. Had her big break in the 1988 film Beaches, playing the younger version of Bette Midler. Appeared in the music video for Michael Jackson's "Liberian Girl." Made her television debut in the 1980s fantasy series Beauty and the Beast. Best known for her role as the title character in the sitcom Blossom. Was successful in many voiceover roles in animated series, including Kim Possible and Hey Arnold! Appeared on a 2009 episode of What Not To Wear. Her The Big Bang Theory character, Amy Farrah Fowler, is a neurobiologist, corresponding to Bialik's real-life degrees in neuroscience. Is a spokesperson for the Holistic Moms Network and gave birth to her second son at home.

Trivia: One of Hollywood's few celebrators of the "Southern bad boy" image, country musician turned actor-screenwriter-director Billy Bob Thornton consistently engenders a reputation -- via chosen onscreen parts and fervent tabloid reports of his allegedly wild off-camera life -- as an iconoclastic American hellraiser with lightning in his veins. But appearances can deceive, for Thornton also reveals depth and complexity as one Hollywood's most articulate interviewees, graced with intelligent, sensitive observations, cultural allusions, and poignant reflections on his experiences as a thespian and film artist. Moreover, this acute insight evidences itself equally in Thornton's craftsmanship as a screenwriter and director. Though his behind-the-camera projects have become increasingly rare over time, his few directorial outings evince surprising control, refinement, insight, and taste. Born in Hot Springs, AR, on August 4, 1955, Thornton grew up dirt poor in the nearby backwoods community of Alpine. Despite his father's gainful employment as a history teacher, Thornton was forced to live with his parents and grandparents in a house without electricity or indoor plumbing. After high-school graduation, Thornton landed a steady job and got married; neither the job nor the marriage lasted, as Thornton divorced two years later and returned to college to study psychology; however, that didn't last, either -- he decided that his heart lay in rock & roll, and tried and failed to make it in New York. So Thornton returned to his job for awhile until he and Epperson renewed their dedication to a music career. Eventually, he would travel to California to write screenplays. It was a difficult time for Thornton who, in addition to living in poverty, also suffered a near-fatal heart attack. Thornton eventually turned to acting, making his screen debut in the straight-to-video Hunter's Blood in 1987. Subsequent roles in many forgettable movies followed (including Troma's Chopper Chicks in Zombietown), as did an appearance on the Burt Reynolds sitcom Evening Shade; the actor simultaneously weathered several marriages through the '80s and '90s, to Toni Lawrence, Cynda Williams, and Pietra Dawn Cherniak. Then, in 1990, Thornton caught the attention of critics when he wrote and appeared in Carl Franklin's critically acclaimed directorial debut, One False Move (1991). A dark crime drama set in a small Arkansas town, the film provided a suitable antecedent to Some Folks Call It a Sling Blade, a 1993 short that Thornton scripted. The George Hickenlooper-directed piece stars Thornton as Karl Childers, a mentally retarded, soft-spoken man, institutionalized for murder, who delivers a reflective monologue to a reporter (Molly Ringwald) just prior to his release from the psychiatric institution where he resides. (Thornton allegedly invented the Childers character years prior, while shaving and talking to himself in the mirror.) The effort won a number of positive notices and Thornton subsequently appeared in Jim Jarmusch's Dead Man in 1995 and (with Epperson), co-authored the screenplay for A Family Thing (1996), a gentle Southern drama starring Robert Duvall as a Caucasian man who discovers that he is half black.After years of relative obscurity as an actor and screenwriter, Thornton made a great cultural impact with the low-budget, independent drama Sling Blade. A feature-length expansion of the Hickenlooper short, and a sequel of sorts to that work, the picture finds Karl Childers returning to the outside world for the first occasion in decades, and attempting to begin a new, quiet life in a small Southern town. In the story, Karl befriends a local woman, her little boy, and a gay storekeeper (John Ritter), and finds lodging and steady income, but runs headfirst into Doyle Hargraves (Dwight Yoakam), a psychotically abusive lout who turns life for the mother and son into a waking nightmare. Bit by bit, Karl's old demons awaken and he feels himself being drawn back into the sphere of retributive violence. When Sling Blade premiered during the late 1996 holiday season, it swept away the hearts of audiences and critics worldwide and heralded the arrival of a major new talent. Journalists waxed rhapsodic in their praise. For Thornton's work on the film, he won a Best Adapted Screenplay Oscar, as well as a Best Actor Oscar nomination. The 1996 triumph of Sling Blade brought Thornton a whirlwind of opportunities. He followed his success with a key supporting role in Robert Duvall's The Apostle (1998) as a hardened racist, a turn in Primary Colors (1998) as a James Carville-like campaign manager with a penchant for exhibitionism, and a role in Armageddon as NASA's executive director. Also in 1998, he received another Best Actor nomination for his work in Sam Raimi's A Simple Plan, the story of two brothers (Thornton and Bill Paxton) who descend into the depths of distrust and paranoia after stumbling upon four million dollars in the woods; it allowed Thornton to plumb the darker areas of the backwoods psyche as only he could do so well. The following year, Thornton starred in Mike Newell's Pushing Tin (1999), a comedy about two dueling air traffic controllers (Thornton and John Cusack). He also returned to his duties behind the camera, directing, writing, and starring in Daddy and Them, a comedy drama about the ups and downs of an eccentric Alabama family. In addition to Daddy and Them, Thornton signed on to act in a number of projects during 2000, including Wakin' Up in Reno, a romantic comedy about two white-trash couples; and South of Heaven, West of Hell, an ensemble Western that marked the directorial debut of country singer Dwight Yoakam. Thornton then delivered a pair of impressive dramatic performances in the first year of the new millennium. Agreeing to appear in Joel and Ethan Coen's neo noir The Man Who Wasn't There without so much as looking at the script (Thornton immediately accepted the role based on his creative respect for the Coens), the gangly actor earned a Golden Globe nomination for his turn as a barber who gets in over his head while attempting to execute a seemingly simple blackmail scheme. Subsequently cast alongside Bruce Willis in Barry Levinson's summer 2001 crime comedy Bandits, that film fared only marginally better than Thornton's sophomore directorial effort Daddy and Them.Thornton's performance in the redemption-themed drama Monster's Ball more than redeemed him in the eyes of the public and press. In that picture, Thornton offers a sensitive portrayal of a conflicted soul who attempts to come to terms with his love for an African-American woman in the face of his racist father's hateful teachings. After once again chasing redemption in the Sundance premiere Levity, Thornton joined the Coen brothers for the disappointing romantic comedy Intolerable Cruelty. In December of that same year, Thornton appeared in a role that only the gutsiest actors would take: the title character in Terry Zwigoff's (jet) black comedy, Bad Santa. Though gleefully, deliberately offensive, the picture never sacrifices its sharp sense of humor or its acid insight, and (perhaps as a result) became a massive runaway hit -- the definitive sleeper of 2003. At about the same time, Thornton cameoed as a slimy, philandering U.S. president who attempts to thwart the amorous conquest of Hugh Grant's prime minister, in the British romantic comedy Love Actually (2003).In 2004, Thornton essayed the role of Davy Crockett in the historical action-epic The Alamo (2004). He was instrumental in bringing Bad Santa scribes John Requa and Glenn Ficarra on board for exhaustive rewrites of Richard Linklater's Bad News Bears remake (2005). Thornton then starred in director Todd Phillips' remake of Robert Hamer's 1960 comedy School for Scoundrels, which debuted in September 2006. Despite some scattered exceptions, the film received mostly negative reviews. Not long after, Thornton essayed the title role in the spectacular drama The Astronaut Farmer, issued in February 2007. This film cast the actor as Charlie Farmer, a retired NASA astronaut-cum-farmer who raises the ire of government authorities by building a spacecraft in his barn. Subsequent roles included a sadistic gym teacher in Mr. Woodcock (2007), an issue-ridden Hollywood studio head in The Informers (2008), and a manure salesman in The Smell of Success (2009). Not long after, Thornton announced his return to directing with the eagerly-anticipated drama Jayne Mansfield's Car. In 2011 he voiced Jack, of Jack and Kill fame, in the hit animated film Puss In Boots. In 2014, Thornton took a lead role in the massively popular TV series Fargo, nabbing an Emmy nomination in the process. Later in the year, he had a supporting role in the film The Judge.

Trivia: Studied acting with Uta Hagen. Had a recurring role on The Big Bang Theory starting with its second series, and was promoted to series regular in 2012 for the sixth series. Plays the owner of a comic-book shop in The Big Bang Theory, and once worked at a similar establishment in New York City. Both of his parents are schoolteachers. Has appeared in more than 30 US adverts, including Eggos and FedEx.

Trivia: Like her older half-sister Melissa (Little House on the Prairie), actress Sara Gilbert grew up on a television series, in this case, the long-running ABC sitcom Roseanne (1988-1997). She and her sister and her older half-brother, Jonathon Gilbert, are the third generation of a showbiz family. Her grandfather, Harry Crane, was a writer for The Honeymooners, her grandmother, Julia Crane, was a former Miss Brooklyn and a dancer, and her mother is a producer and talent manager. Gilbert made her professional debut in a television commercial at age six, and from there appeared in the television series Tales of the Apple Dumpling Gang (1982). She then played a small role in the made-for-TV movie Calamity Jane, which starred Jane Alexander. Gilbert's career slowed down after that and she did not appear on television until 1988 when she appeared in Runaway Ralph as part of the ABC Weekend Special. As Darlene Connor in Roseanne, Gilbert believably played a cynical, smart-mouthed, but sensitive foil for Roseanne. Gilbert showed versatility as a confused Daddy's girl who is victimized by a calculating Drew Barrymore in Poison Ivy (1989) and as a Southern child with a dark secret who is befriended by a gentle black man in the well-wrought Sudie and Simpson (1990). Gilbert has been twice nominated for an Emmy and has won three Youth in Film Awards. During the last couple seasons of Roseanne, Gilbert began attending Yale University where she studied art and photography. She has also been an avid supporter for various environmental causes through her affiliation with Earth Communications Office (ECO).She stayed away from acting for the most part until 2007 when she began making occasional appearances on the hit sitcom The Big Bang Theory often playing opposite her former Roseanne co-star Johnny Galecki. In 2010, she created the talk show The Talk, a knockoff of The View, and serves as an executive producer and co-host of the series.