<P> Harrison was born in Portland, Oregon . In his senior year, he attended Tualatin High School in Tualatin, Oregon . His first acting role came at the Hillsboro Artists' Regional Theatre in his home state where he had the role of George in Our Town . </P> <P> One of his first TV appearances was in the third season of MTV's Undressed and the MTV film Everybody's Doing It . In 2002, Harrison appeared as Lonny in the movie Orange County . His first major role was dorky next - door neighbor Brad O'Keefe on Grounded for Life . In 2004, Harrison starred as Green Graves in the coming of age drama film Lightning Bug . </P> <P> Harrison appeared in five episodes of That' 70s Show as Charlie Richardson, a character intended to be a replacement for departing cast member Topher Grace but Harrison decided to work on another series . He appeared in The O.C. as Danny, Seth's rival . He had a dramatic guest role on Law & Order: Special Victims Unit as Sam Cavanaugh, a young victim of sexual abuse . In film, he appeared alongside Jack Black and Colin Hanks in Orange County . In addition, Harrison also starred in the movie Deal, which was released in the US on April 26, 2008 . </P> <P> During 2006 - 07 he starred in The Loop, as a young professional trying to balance the needs of his social life with the pressures of working at the corporate headquarters of a major U.S. airline . It was canceled following the second season in 2007 . Later in 2007, he became the star of The CW series, Reaper as Sam Oliver . Reaper was canceled on May 19, 2009, after two seasons . </P>

Who is charlie on that 70's show
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