Jacques Tati acted in Jean-Pierre Melille´s 1972 film , Un flic .
Considered as possible substitute for Jean-Louis Barrault in Les Enfants du Paradis , he played the ghost in Sylvie and the Ghost Sylvie et le fantôme ( Claude Autant-Lara appeared as Sylvie ) and also appeared in The Devil in the same body .
Jacques Tati