Wolverine is one of my least favorite, but for different reasons.
It's not all out horrible like Catwoman or Elecktra. And in terms of being a movie, it's no where near as bad as comic films like Steel, Batman and Robin, or Ghost Rider.
However, why I hate it is because it was horribly, infuriatingly, annoyingly mediocre. It had some horrible parts. It also had some pretty good parts. It didn't completley piss on the character like a Batman and Robin or Catwoman, but it still got a good amount wrong.
It was just bad enough to not be so bad that the general public would shun it, and it was just successful enough to guarantee that more movies will be made, thus further delaying any chance we have of getting a good Wolverine solo movie.