Answer
Jean Renoir did act in films. In 1919, he made his first film appearance in the short "L'Inondation". He would later appear in several of his own films, including "La Grande Illusion" (1937), "La Règle du jeu" (1939), and "Le Carrosse d'or" (1952). Renoir was a talented actor and his performances were often praised by critics.