So funny was The Muppet Show after Superman came out, with Christopher Reeve guest hosting. Miss Piggy had a crush on him and swooned, calling "Super-body Man" and the other Muppets spent the show trying to become super heroes.
If you haven't seen it, watch the Richard Donner Cut of Superman. It's basically Superman and Superman II but not split up into two movies. The story flows logically like Donner wanted it to, and covers the origin story all the way up to the battle against the Kryptonian villains General Zod, Ursa and Non.