Yves Robert 's directorial efforts included several successful comedies for which he had written the screenplay . His 1962 film , '' La Guerre des boutons '' won France 's Prix Jean Vigo . His 1972 film '' Le grand blond avec une chaussure noire '' won the Silver Bear at the 23rd Berlin International Film Festival in 1973 . In 1976 , '' Un éléphant ça trompe énormément '' , starring his wife , earned him international acclaim . Robert 's 1973 devastating comedy '' Salut l'artiste '' is considered by many performers to be the ultimate film about the humiliations of the actor 's life . In 1977 , he directed another comedy , '' Nous irons tous au paradis '' , which was nominated for a César Award for Best Film
23rd Berlin International Film Festival
23rd Berlin International Film Festival
Yves Robert