Zombie horror movies, they freak me out and take me back to being a little girl hiding from the movie. Any other horror movie doesn't bother me, but zombie just send a shiver up my spine.
I try to stay away from series that go past three movies. They are usually stale, badly put together, and start to ruin the original talent that was there in the first place. It's just another series ruin because Hollywood had to suck the cow dry.
Movies that change or completely rewrite history like Pearl Harbor. They made that movie too long, and used the characters in a mission (where everyone got home alive and those men were never at Pearl Harbor) so they could wrap their love triangle up in a little bow. To me the end of that movie is when FDR gives his speech and everything is up in the air and unknown like it was back then. I hate movies where they force endings into these neat little packages.