I've gotten lots of enjoyment out of movies I've gone into expecting to be terrible. I'm still not sure if it's because they were actually good, or if it's because I had such low standards for them that it was almost impossible to not meet them (I watched Tron and Star Trek solely because I expected them to be glowy and probably terrible, and ended up enjoying the hell out of them; I have no idea what quality they actually were. I watched Robin Hood for the archery; there was almost none. It was definitely as bad as you said it was).