Driven into exile by the Nazis, they changed Hollywood forever

I saw an excellent documentary over the weekend, Cinema's Exiles: From Hitler to Hollywood. The film documents the experiences of some well known (Fritz Lang, Peter Lorre) and less well known (Erich Pommer, Joseph Mai) Jews from Germany's film industry who escaped Hitler's Germany and wound up in Hollywood, with varying degress of success. Some of the history I knew, but most I didn't, and the documentary as a whole was fascinating.