<P> Galecki continued his film streak with roles in Suicide Kings (1997) and brief bit parts in high - profile films such as Bean (1997), and a minor supporting part in Vanilla Sky (2001). Galecki played a young delinquent in A Family Torn Apart, a 1993 TV movie based on a true story about a serial killer . He was also in the 2003 film Bookies, a comedy thriller film written by Michael Bacall and directed by Mark Illsley . The story revolves around the lives of four college students . Galecki appeared as a golfer in a 2005 episode of My Name Is Earl entitled "Stole Beer from a Golfer". </P> <P> In 2005, Galecki played Mark Corrigan in a pilot for a US adaptation of the British sitcom Peep Show . He played a character named Trouty on TBS's sitcom My Boys, and the half - brother of the main characters, sisters Hope Shanowski and Faith Fairfield, in the sitcom Hope & Faith . In late 2006 and early 2007, Galecki appeared in the Broadway play The Little Dog Laughed as a prostitute called Alex . "At its core, the play is about what we all sacrifice to be successful, whatever our careers or goals," he explains . Galecki originated the role earlier in 2006 at Second Stage Theatre . The widely popular comedy by Douglas Carter Beane had a successful run at Second Stage and moved to the Cort Theatre . The play closed on February 18, 2007, with Galecki taking home a 2007 Theater World Award for his performance . </P> <P> Galecki plays Leonard Hofstadter in the CBS sitcom The Big Bang Theory, which debuted September 24, 2007 . He was originally asked to play the role of Sheldon Cooper, but he said he was better suited for the role of Leonard Hofstadter, and Sheldon's role was eventually given to Jim Parsons . During his role as David Healy on Roseanne, Sara Gilbert played his longtime girlfriend and later wife, Darlene Conner . She has appeared as Leslie Winkle, a colleague in the Big Bang Theory . Laurie Metcalf, who portrayed Roseanne's sister Jackie Harris, has appeared as Mary Cooper, mother of Leonard's roommate, Sheldon . Galecki is a cellist, a talent which has been used on the show . As of August 2013, Galecki and his Big Bang costars Kaley Cuoco and Jim Parsons each earned US $325,000 per episode . As of August 2014, the three costars will earn US $1 million per episode . </P> <P> Galecki appeared briefly in the 2008 superhero comedy Hancock, alongside Will Smith and Jason Bateman . In July 2011, he played a parody version of himself in three episodes of Entourage . He also appeared in the film In Time (2011) with Justin Timberlake and Amanda Seyfried . </P>

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