Superman III (1983)

Clark travels to Smallville for his High School Reunion and reconnect with his childhood sweetheart Lana Lang. Computer programmer Gus Gorman is hired by financial tycoon Ross, to take control of the coffee business, by wiping out all the competition via satellite. After Superman destroys their plan, Ross makes Gus figure out how to find Kryptonite to eliminate Superman, but he uses tar as the missing element. This causes an unusual effect on Superman. Meanwhile Gus gets his machine he wanted built that can do anything you want it to do.—anielsen-45670