Going with LOTR because of how epic it was and the soundtrack was the best OST I've ever heard. The Dark Knight should be next. That was a brilliant movie; Christopher Nolan is a genius. I like pirates.
Dark Knight is probably #2 out of this list. The first Pirates would go higher but as a series it moves down.
I like all these movies! Except I haven't seen all of the Harry Potter ones. I've missed two, I think. But the ones I have seen are in the good but not brilliant range. Movies I like and would happily see again but not ones that would be the top of my lists of best movies.
I don't want to push Thor too high because it just came out, but I do really like it a lot!