"Play it again, Sam" is probably the best known quote from the film Casablanca (1942) starring Humphrey Bogart. The problem is that it's a misquote. The actual line is: "Play it once, Sam, for old times' sake," delivered by Ingrid Bergman
DID YOU KNOW? Marlon Brando hated memorizing lines so much that he posted cue cards everywhere to help him get through scenes.
He even asked for lines to be written on an actress's posterior. (That request was denied.)