When Superman the Movie came out and later on TV, when Superman first meets up with Lex Luthor in Luthor's underground lair, Superman passes through several tests. He gets shot at, fire, cold, and maybe something else I don't remember. He breaks down a giant steel door at the end. Modern versions only have the door part.
Whenever it comes on TV or even in uncut versions on DVD (or CVR for that matter) the scene is missing. How come? I loved that scene.