I've only seen one of the Pirates movies. It was entertaining enough, but not enough that I would watch any of the others.
As much as I like seeing movies in the theater, I tend to wait to see a lot of movies until they are on DVD. I hate crowded theaters (I never get a good seat), and for some reason, even in a noncrowded theater, people sit near me (people I don't know) and want to talk amomgst themselves about stuff. Then there is the whole have to go to the restroom during the best part of the movie, thing.
I'll probably see Iron Man next weekend, though.