I thought the movie looked great in 3D IMAX, but I only liked it as much as I wanted to love it going in.
The movie was just too damn long for the story they were telling. It felt like it SO badly wanted to be part of the Dark Knight trilogy too.
Whoever mentioned the lack of humor upthread was completely right. Comics are full of humor, sometimes very punny humor, and it's always a terrible mistake to make these films too serious.
Still, I did enjoy parts of the film and basically felt like this was one really long prologue to set up a sequel where the fun will (hopefully) begin.
Marie: Don't be in such a hurry about that pretty little chippy in Frisco.
Tony: Eh, she's a no chip!