The article explores the interaction between theater and cinema in films about theater, more specifically in relationship to the concept of time, in two different meanings: as a subject hinting to the passing of generations on the one hand and as a manipulation of a story on the other. As I will try to show, these very different perspectives can intersect and superpose, giving birth to negative or positive visions of the stage and theatricality. Theatricality can be a great resource (as in To Be or Not To Be by Lubitsch and Le carrosse d’or by Renoir) as well as a path of tragic circularity (as in O’ thiasos by Anghelopoulos or in films showing an artist’s decline, like Mankiewicz’s All About Eve). The films on theatre show an extreme varie...