There's a documentary on right now I'd really like to watch. Cinema's Exiles: From Hitler to Hollywood. I'd always known about people like Peter Lorre and Billy Wilder, but I hadn't realised just how many others had come over. Apparently, most of the cast of Casablanca, for example. And there's lots of interesting stuff on Ernst Lubitsch and how influential he was, really an important node in the network of emigrés and exiles. Must try to catch this sometime.