Trivia: Philadelphia native Rob McElhenney struggled to find his footing as an actor in Los Angeles before deciding that the best way to get a job was to create his own series, and after collaborating with Charlie Day and Glenn Howerton to produce the pilot for It's Always Sunny in Philadelphia, it finally seemed as if his dreams of stardom were coming true. A hardworking stage actor who had previously essayed roles in numerous Fordham University productions in addition to dabbling in regional theater, McElhenney began segueing into film with supporting roles in such features as The Devil's Own, A Civil Action, and Thirteen Conversations About One Thing. When subsequent roles in Campfire Stories and Latter Days failed to ignite McElhenney's onscreen career, he turned to waiting tables as a means of making ends meet. All the while, McElhenney knew there was something more creative he could be doing, and after scraping together 200 dollars and a digital video camera he enlisted the aid of Day and Howerton to shoot a pilot for It's Always Sunny in Philadelphia. Thankfully for McElhenney, the folks at FX liked the prototype pilot, and before he knew it they had ordered a whole season. In addition to his roles in creating the series, McElhenney also appeared onscreen as temperamental barkeep "Mac," who runs Paddy's Irish Pub alongside his three best friends, Charlie (Day), Dennis (Howerton), and Sweet Dee (Kaitlin Olson). The show enjoyed a run of many years, and launched the career of Charlie Day.

Trivia: Born in Japan and raised in Montgomery, AL, actor Glenn Howerton attended Juilliard before making his screen debut in the 2002 made-for-television feature Monday Night Mayhem. Recurring roles in That '80s Show and ER found Howerton settling into a comfortable small-screen schedule in 2002 and 2003, with supporting parts in such features as Serenity and Crank coming along just as Howerton joined the cast of the monumental FX comedy series It's Always Sunny in Philadelphia. In addition to his acting duties on the show, Howerton also served as writer, co-creator, and producer of the series. He would also take on regular roles on Unsupervised and lend his voice to The Cleveland Show.

Trivia: New York-born actor Charlie Day appeared in an impressive array of Williamstown Theatre productions before transitioning into television with a brief appearance in the Mary Tyler Moore/Valerie Harper reunion special Mary and Rhoda. Subsequent roles on Madigan Men, Law & Order, and Third Watch helped Day build an impressive list of small-screen credits, and in 2005 he joined the cast of the deliciously warped FX sitcom It's Always Sunny in Philadelphia. Cast as an inherently good-natured guy often done in by his own shady intentions and poor luck with ladies, Day held his own opposite Danny DeVito, helping to establish himself as a respectable rising talent. Although he tried to stretch out in projects like A Quiet Little Marriage and Going the Distance, it was the 2011 hit Horrible Bosses that earned him his greatest praise apart from It's Always Sunny in Philadelphia. In 2006 he married his Philadelphia co-star Mary Elizabeth Ellis.

Trivia: A native of Portland, OR, who honed her passion for the stage by studying theater at the University of Oregon, Kaitlin Olson moved to Los Angeles after earning her degree and quickly aligned herself with the improvisational comedy specialists at the Groundlings Theater. A coveted spot in the Sunday Company proved the catalyst that would help Olson to secure roles in the hit HBO series Curb Your Enthusiasm (in which she played Cheryl's sister Becky), and the hit sitcom The Drew Carey Show (in which she played Mimi's nemesis Traylor). Later, after joining Carey's "Who's Line Is It Anyway?" troupe at the Melrose Improv, Olson joined her bespectacled co-star for a USO tour and entertained troops in Bosnia, Kosovo, and Norway. While The Drew Carey Show would go off the air in 2004, Olson wasn't out of work for long, and next turned up as part owner of a popular Irish pub in the twisted FX series It's Always Sunny in Philadelphia. In 2007, Olson remained busy on the small screen with a recurring role on the Emmy-nominated series The Riches.

Trivia: Perhaps no Hollywood actor continually stirs up more of a gleeful admixture of feelings in his viewers than Danny DeVito. Singlehandedly portraying characters with mile-long, obnoxious jerk streaks that are nonetheless somehow loveable, DeVito -- with his diminutive stature, balding head, and broad Jersey accent -- made an art form out of playing endearingly loathsome little men.Born November 17, 1944, in Neptune, NJ, Daniel Michael DeVito Jr. survived a Catholic school upbringing and started his career from the ground up, laboring as a cosmetician in his sister's beauty parlor. Working under the name "Mr. Danny," DeVito decided to enter New York's American Academy of Dramatic Arts for the purpose of acquiring additional makeup expertise. However, he soon discovered his true theatrical calling and made his screen debut with a small part in the 1968 drama Dreams of Glass. After a few discouraging experiences within the film industry, DeVito decided to concentrate on stage work. During this time, he met actress Rhea Perlman, whom he later married in 1982. In 1972, the actor made his way back into films with a role in Lady Liberty, a comedy starring Sophia Loren. His first notable film part came three years later, when he reprised his stage role of Martini, a sweet-natured mental patient, in Milos Forman's screen version of One Flew Over the Cuckoo's Nest. Produced by DeVito's old friend Michael Douglas and co-scripted by Lawrence Hauben and Bo Goldman, the film won wide acclaim and nine Oscar nominations, eventually gleaning five statuettes (including Best Picture). Despite the adulation surrounding the film, DeVito's screen career remained lackluster, but he skyrocketed to fame three years later with his role as the obnoxious dispatcher Louie on the long-running television sitcom Taxi. From there, DeVito's career swung upward and he spent the next decade playing similarly repugnant characters with enormous success. He reunited with Douglas for Romancing the Stone (1984) and its 1985 sequel, Jewel of the Nile, teamed up with co-star Joe Piscopo and director Brian De Palma (as a scam artist on the run) in Wise Guys (1986), and signed with Disney's R-rated offshoot, Touchstone, for two comedies, the 1986 Ruthless People, and the 1987 Barry Levinson-directed Tin Men.Throw Momma from the Train (1987) marked DeVito's premier directorial outing. A madcap farce directed from a script by Benson and Soap scribe Stu Silver, Momma cast DeVito as Owen, a dim-bulb student living under the thumb of his loudmouthed mother, who is enrolled in a writing course taught by failing novelist Larry Donner (Billy Crystal). Stumbling into a repertory screening of Strangers on a Train one night, Owen has the not-so-bright idea of emulating the film, by bumping off Larry's conniving ex-wife in exchange for having Larry rub out his momma -- without asking Larry first.Throw Momma from the Train opened during the Christmas season of December 1987 and received mixed reviews. The picture nonetheless became a massive hit, grossing upwards of 57 million dollars, and thus paving the way for future DeVito-directed efforts. The War of the Roses (1989) recast DeVito with his Romancing the Stone and Jewel of the Nile co-stars, Michael Douglas and Kathleen Turner, but could not have been any more different in terms of theme, content, tone, or intended audience. Co-adapted by Warren Adler and Michael Leeson (from Adler's novel), this acerbic, black-as-coal comedy tells the story of Oliver and Barbara Rose, a seemingly happy and well-adjusted married couple whose nuptials descend into a violent hell when Barbara announces that she wants a divorce -- and Oliver refuses to give her one. DeVito plays the cherubic lawyer who relays their story to another client, and famously reflects, "If love is blind, then marriage must be like having a stroke." The picture instantly grossed dollar one, garnered legions of fans, and delighted critics across the board.Ida Random produced Momma, and DeVito's Taxi collaborator, James L. Brooks, produced War, but by the early '90s, DeVito gained additional autonomy by branching out into production duties himself, with the establishment of his own Jersey Films. Some of Jersey's more successful endeavors were 1994's Pulp Fiction (on which DeVito served as executive producer), Reality Bites (1994), Get Shorty (1995), Gattaca (1997), Out of Sight (1998), and Living Out Loud (1998). In the meantime, DeVito continued to act in a number of movies throughout the late '80s and '90s, his most notable being Twins (1988, in which he played the "twin" of Arnold Schwarzenegger), the disappointing Jack the Bear (1993), the delightful Other People's Money (1991, for which he took on the role of corporate monster Larry the Liquidator), Barry Sonnenfeld's Get Shorty, the screen adaptation of Roald Dahl's Matilda (1996, which he also directed and produced), L.A. Confidential (1997), and Living Out Loud. For the last of these DeVito won particular acclaim, impressing critics with his touching, sympathetic portrayal of a lonely elevator operator. In 1999, he added to his already impressive resumé with a role in Milos Forman's biopic of Taxi co-star Andy Kaufman, Man on the Moon, and a supporting turn in Sofia Coppola's The Virgin Suicides.Despite solid performances in a series of recent high-profile hits and decades of big-screen success, the millennial turnover found DeVito's star somewhat clouded as such efforts as Screwed (2000), What's the Worst That Could Happen? (2001), Death to Smoochy (2002), and Duplex (2003) failed to live up to box-office potential. DeVito fared only slightly better as producer of the critically acclaimed 2003 television series Karen Sisco and the ugly Get Shorty sequel, Be Cool. He also acted as executive producer for the acclaimed Zach Braff dramedy Garden State and could be spotted in director Tim Burton's imaginative fable Big Fish. As 2005 rolled around, audiences could spot DeVito in films such as The OH in Ohio, as well as on television as the actor found himself accepting a role in the quirky, taboo-busting series It's Always Sunny in Philadelphia.During 2006, DeVito balanced a full plate of work, temporarily retiring from the director's chair, but juggling small roles in no less than three A-list features. These included Brad Silberling's 10 Items or Less, a drama about the unlikely friendship that evolves between a has-been Hollywood star (Morgan Freeman) and a supermarket checkout clerk (Paz Vega); Jake Paltrow's directorial debut, The Good Night, a slice-of-life dramedy starring Gwyneth Paltrow and Penélope Cruz; and the holiday comedy Deck the Halls. The latter starred DeVito and Matthew Broderick as neighbors who go to "war" with competing decorations at Christmastime to see who can be the first to make his house visible from space. The film co-starred Kristin Davis and Kristin Chenoweth. Meanwhile, Jersey Films geared up to produce the 2007 Freedom Writers, directed by Richard LaGravenese -- a kind of retread of Stand and Deliver and Dangerous Minds, with Hilary Swank as a teacher determined to break through to her difficult students. Also in 2007, DeVito starred in Randall Miller's violent black comedy Nobel Son, DeVito joined longtime friend and collaborator Michael Douglas with a supporting role in the 2009 Solitary Man, then in 2012 voiced Dr. Seuss's title character in the classic animated fable The Lorax. DeVito and Perlman have three children.

Trivia: Began acting as an elementary-school student in local theater productions in her native Mississippi. Appears alongside her actor-producer husband, Charlie Day, on It's Always Sunny in Philadelphia; she has a recurring role as his on-screen crush. Cowrote and starred in the independent film A Quiet Little Marriage (2008), which won a Grand Jury Award at the independent-film festival Slamdance. Is a member of the band/performance-art group Discount Cruise to Hell.

Trivia: Is the fifth of eight boys in his family. Decided to give acting a try after seeing a play in high school and thinking, "Man, this stinks. I can do better than them." He moved to Hollywood immediately after graduation. Had his first starring role in a television show as Trek in Team Knight Rider. Auditioned for four different roles on Roswell before being cast as Kyle.

Trivia: Comedian Nasim Pedrad was born in Iran, but grew up in Irvine, CA. She attended UCLA's School of Theatre before moving on to appear in the Groundlings, Improv Olympics, and Upright Citizen's Brigade. In 2009, Pedrad's sketch comedy skills were put to the test when she joined the cast of Saturday Night Live. She appeared in the romantic comedy No Strings Attached, and provided a voice in The Lorax.

Trivia: Is of Iranian descent; her parents emigrated from Iran five years before the Islamic Revolution of 1979. First acting job was performing at a theme park at the age of 17. Studied at Dell'Arte International School of Physical Theatre after moving to California to pursue acting. Was a member of the Sunday Company at the Groundlings Theatre in Los Angeles. Earned her breakout role in It's Always Sunny in Philadelphia as a result of her long-time friendship with fellow actor Mary Elizabeth Ellis, who is married to one of the show's creators, Charlie Day. Performed in a stage tour adapted from a popular episode of Always Sunny titled "The Nightman Cometh." Appeared in New Kids on the Block's 2013 music video for "Remix (I Like The)" as the Lonely Wallflower. Named in the tenth spot of Complex's list of The 25 Most Underrated Sitcom Characters of All Time for her role as Artemis in Always Sunny.