What is your favorite, and least favorite Marvel movie?

I just want your honest opinion. If it isn't too much to ask I would
like to know why. For example: "I liked Iron Man because..." or "I
didn't like Hulk because..." If you don't want to tell why you did or
did not like the movie that's fine too, but I would appreciate your
opinions.
I am a huge fan of the Marvel movies, and there are only a few I
didn't like. I agree with the one that liked Iron Man, and I also
liked all of the X-men movies. I liked the second Hulk though. I
thought it was a great movie, and it showed how cool hulk can be. It
also erased the awful taste the Ang Lee's hulk left in my mouth. I
thought that was one of the worst movies I have ever seen.