I agree with firedeep on Casablanca. But I would not be as harsh on Citizen Kane, thought it's still a slightly entertaining movie, and Orson Wells gave a good performance. The movie's biggest achievement was of course the revolutionary, groundbreaking, introduction of new technology in filmmaking, something that I do appreciate a lot. But Casablanca is better IMO cause it connected to me more emotionally. Great performances from the charming leads, good direction, interesting characters and plot, beautiful love story, etc...