Career: Martin began writing for various shows in the 1960s, and won an Emmy for his work on The Smothers Brothers Comedy Hour. His stand-up career took off in the 1970s, with best-selling albums and hit tours, but he gave it up in 1982 to concentrate on movies. His first big film hit was 1979's The Jerk, which he followed with The Man with Two Brains, Roxanne, Planes, Trains and Automobiles, Dirty Rotten Scoundrels, LA Story, Parenthood, Father of the Bride and Bowfinger. Away from films, Steve has written a number of books, including a memoir, Born Standing Up, and the novella Shopgirl. He collaborated on an album with Edie Brickell that was released in 2013. Martin also regularly plays banjo alongside various artists.

Career: In 1983, Levy was part of the cast of Canadian sketch comedy Second City Television, where he won two Emmy Awards for writing. He established his credentials as a comedy character actor in a number of films before his big break came in 1999, when he was cast as Jim's Dad in American Pie. He is the only actor to have appeared in all eight of the American Pie films. He has also starred in Best of Show (2000), A Mighty Wind (2004), Cheaper by the Dozen 2 (2005), For Your Consideration (2006), and Goon (2011).

Career: Duff's breakthrough came in 2000 when she landed the title role in the Disney Channel's Lizzie McGuire. The hugely popular series made Duff a household name. Her first big film role came in 2003 when she was cast opposite Frankie Muniz in Agent Cody Banks. In the same year, she starred in The Lizzie McGuire Movie and popular family comedy Cheaper by the Dozen. Since Lizzie McGuire ended in 2004, Duff has starred in Cheaper by the Dozen 2 (2005), Gossip Girl, Community, Raising Hope and Two and a Half Men. Away from acting, Duff has had a successful recording career and she has co-authored novels with Elise Allen.

Career: Perabo relocated to New York, where she studied acting at the La MaMa Experimental Theatre Club. It wasn't long before she landed her first role, in Marc Levin's comedy Whiteboyz (1999). A year later, she played an FBI agent in The Adventures of Rocky and Bullwinkle. Roles followed in Coyote Ugly (2000), Slap Her, She's French (2002), Cheaper by the Dozen (2003) and its 2005 sequel, The Prestige (2005) and Beverly Hills Chihuahua (2008). More recently, she starred in Looper (2012). She made the move into TV in 2010 when she began playing CIA Agent Annie Walker in Covert Affairs.

Career: Welling moved to Manhattan and over the course of two years, gained widespread attention for his modelling work. However, by 2000, he had tired of the business and relocated to Los Angeles, where he decided to become an actor. He started out with adverts and appearances in music videos, but it was his role in the drama series Judging Amy, in which he played the much younger love interest of the leading lady, that he hit the big time. In 2001, he took the lead in Smallville, and since then has enjoyed the show's small-screen success. He has also appeared on the big screen in Cheaper by the Dozen and its sequel, and the horror remake The Fog.