Re: Are Superman III and IV really THAT bad?
Superman III is very underrated for me, its got some of the finest moments of any Superman film; Superman's saving the workers/Jimmy in the chemical plant scene Evil Superman terrorises the World, Evil Superman vs Clark (best fight in all pre MOS live action Superman movies) and the finale of Superman vs the machine. Of course it does have to overcome some of the bad things i.e. Poor villains, Richard Pryor, the domino effect opening (which admittedly features a neat Clark to Superman change in a photo booth) but I think the good far outweighs the bad.
Superman IV however was just ugh, I really think though with a bigger budget and Chris Reeve playing both Superman and the villain it would have been a much better watch.
Edit: I just realised I'd already posted here but this post was more elaborate.