Anthony Deane Rapp (born October 26, 1971) is an American stage and film actor and singer best known for originating the role of Mark Cohen in the Broadway production of "Rent" in 1996 and later for reprising the role in the film version and the Broadway Tour of "Rent" in 2009. He also performed the role of Charlie Brown in the 1999 Broadway revival of "You're A Good Man, Charlie Brown". Description above from the Wikipedia article Anthony Rapp, licensed under CC-BY-SA, full list of contributors on Wikipedia.