He was one of the founders of the comedy troupe"Le Splendid" in the 1970s, along with, among others, his high-school friends Christian Clavier, Thierry Lhermitte, and Michel Blanc. That group adapted a number of its stage hits for the cinema, and scored major successes with films such as Les Bronzés (1978), Les Bronzés font du ski (1979) and Le Père Noël est une ordure (1982).
He gained international fame for his lead role in Les Choristes in which he played Clément Mathieu. He's directing two movies in 2008-2009: Faubourg 36 and Rose et Noir.