I've seen it twice now, once on the opening day with the guys and again today with the family. It's such a geat movie. It's even just over 2 hours long, but there's really no parts in the movie that are boring, it flows along nicely with character development and storyline.
It's more of a serious movie than say Spiderman, but it has it has a couple of funny parts, but that's not a bad thing, serious is good.
Also, make sure that you stay in the theature until ALL of the credits roll for a little suprise
I won't ruin it, but make sure you stay. I know both times I saw the movie, only a handful of people stuck around while the rest left and missed out on it.