How many movies have Frédéric Proust and Serge Riaboukine acted in together?

They have worked on 2 movies together! Their first movie together was Skin of Man, Heart of Beast (1999) while their highest rated movie together was Coluche, l'histoire d'un mec (2008). They have not worked together since Coluche, l'histoire d'un mec (2008).