He is best known for major roles in Quebec big-box movies such as Séraphin: Heart of Stone and the four-part Les Boys series.
However it was in 1997 that his career became more prominent with his first major role in Les Boys, playing the role of Meo, who is a friend of Stan (played by Rémy Girard) and businessman in which threaten to take Stan's bar if his garage league hockey team did not defeat this own squad made consisting of several tough players, albeit the Boys had defeated Meo's team.
Lebeau played in all four chapters of Les Boys and will also play in the 2007 television mini-series along with most of the same actors that participated for part or all of the tetralogy including Marc Messier, Serge Thériault, Patrick Huard, Girard, Yvan Ponton and Patrick Labbé.
Lebeau, for his role in the 2002 movie produced by Charles Binamé, earned himself a Jutra Award for best actor.
Lebeau also played in various movies and television series including Nouvelle-France, L'Incomparable mademoiselle C, Bon Cop, Bad Cop, Fortier, Matroni et Moi, Les Dangereux, L'Odyssée, Urgence and Un gars, une fille.