Most famous as Sandy on "The O.C.", Peter Gallagher made his stage debut in the 1977 revival of "Hair", and his feature film debut in 1980's "The Idolmaker". Since then, Peter has continued a successful career in theater, movies, and television. Peter has been seen in "American Beauty", and "While You Were Sleeping", as well as earning a Tony Nomination for his performance in "Long Day's Journey Into Night".
Peter starred as Sky Masterson in the 1992 Broadway revival of the musical "Guys and Dolls", also starring Nathan Lane.
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