The Dark Knight
I agree with dialup that TDK is the best hero movie ever, however I think it transcends the sub-genre and stands along with other classic films. I also didn't feel the movie had the pacing issues that dialup describes, though I do understand where you're coming from... it is quite up and down. Personally, I felt that added to the movie because you think things are done, but the it's like "no no... it aint going to be that easy". I agree that the final joker fight isn't as good of a scene as the 5th street chase. That was just incredible.
Chock another recommendation. I pretty much agree entirely with Yaminb. Good clean fun, funny and good action. Maybe not worth a full price theater admission, but if you can catch it in a drive-in double feature or a budget theater then it's not a bad way to spend an evening.