Which movie do you have to see twice before you really understand it?S

Some movies give up all their treasure on the first viewing. But others only really start to speak to you when you've already seen them once or twice. What's your favorite movie that has to be seen more than once to be understood?

Please include a picture, a poster or a clip for this marvelous film. And mention the title, and what you got from a second or tenth viewing that you didn't get from the first.

Top image: Terry Gilliam's Brazil.