Movie series where the sequel ruined the original

This list is not for movies where the sequel is worse than the original, rather it is for movies where the sequel actually makes you think less of the original.
  1. The Matrix
    In the original they mention that humans have moved to the center of the Earth. When I watched the original, I pretty much ignored this. However, in the sequels you see them living in the center of the Earth and you realize just how stupid that premise is.