T.R. Knight is an American actor best known for his role as George O'Malley on the popular television series Grey's Anatomy. Born on March 26, 1973, in Minneapolis, Minnesota, he began his acting career in theater before transitioning to television and film. In addition to Grey's Anatomy, Knight has appeared in various stage productions and films, showcasing his versatility as an actor. He has received critical acclaim for his performances and has been involved in several charitable causes throughout his career.