Watching it today, it’s impossible to imagine It Happened One Night  starring anyone but Clark Gable and Claudette Colbert. Yet director Frank Capra originally had in mind totally different actors.
Duck Soup  is the Marx Brothers' masterpiece, acclaimed not only for its brilliant comic routines but for its satire of nationalism, jingoism, and saber-rattling. There’s no plot to speak of here...mostly the setup provides a framework for some of their most memorable routines.
Billy Wilder’s Some Like It Hot  is such a beloved movie – in 2000 it was named the best Hollywood comedy ever in an American Film Institute poll – that few remember that the critics disliked it and that the studio didn’t want to make it.