7. Superman III

Yes, the one with Richard Pryor, the stand-up comedian who decided to be an actor.  The series with Christopher Reeves had basically run its course prior to this one, and the fact that they needed a gimmick like Pryor to try to attract fans to the theaters was laughable.

The idea is that Richard Pryor is a scientist who is looking for a payday.  He quickly decides that he hates Superman and endeavors to destroy him.  So how do you kill the Man of Steel?  Kryptonite is the first thought that pops into your head of course. But what do you do when there isn’t any Kryptonite lying around?

You create a synthetic Kryptonite from Earthly elements and you lace it with tobacco tar for a little added potency.  This causes Superman to split into two separate beings; the Superman persona on one side vs the Clark Kent side.  I’m bored just writing this. The movie was awful. If you missed it, consider yourself lucky.