First of all, La Doublure does not translate into The Valet. In the movie's context, doublure is French for  stand in or double, usually in theatre. Many of of Francis Veber's comedies have games of pretense in their plots involving a character named François Pignon. Previous well known Veber films of similar nature are Le Dîner de cons (The Dinner Game) and Le Placard (The Closet). I think the latter is still my favourite of…