Superman III (1983)

Rating: *
Cast: Christopher Reeve, Richard Pryor, Robert Vaughn

Pretty bad stuff, but Christopher Reeve continues to shine as the Man Of Steel. Richard Pryor is a goofy computer genius who gets exploited by his nasty boss (Robert Vaughn) to do nasty things. It's up to Superman to stop the nastiness, except that he's come into contact with some synthetic Kryptonite which causes him to undergo a severe personality change (naturally for the worse).