Trivia: Towards the end of the credits, there is a paragraph that states "Unauthorized duplication, distribution, or exhibition may result in civil liability and criminal prosecution. SO THERE." (01:27:05)
Trivia: When Clark and Lois arrive at the diner, Superman I director (and part of II) Richard Donner is walking by. He was fired before filming ended and was replaced by Richard Lester, but his cameo made it to the final cut.
Trivia: The Cook County collector is played by Steven Spielberg.
Trivia: In Cloud City, when Chewy finds C-3PO in pieces in what looks like a droid scrap room, you can see what looks like the upper half of IG-88 leaning up against the wall. It is revealed later in books to be the IG-88 unit that went in search of Han, but was intercepted and destroyed by Bobba Fett.
Trivia: At various points in the film, Jack Nicholson flicks his eyes to the camera, often only for a few frames, frequently hard to catch. It's deliberate - in one clip of behind the scenes footage Kubrick lies under him while setting up a scene, and specifically tells him to look down to the camera when filming. But there's no specific answer as to why - genre-defying, or to make the audience feel more threatened, or to make the viewers feel like the ghosts he sees. Hard to unsee though.