I liked it. More humor (not just from Stark) than I expected. All the action in the big fight scene built up well with the exposition that seemed to go on and on (not a bad thing, though). There were a few "comics" insider comments, and I almost forgot about the Stan Lee cameo throughout the film. I loved the Thanos smile at the end. Stay after the credits for another "end" part. I'm not sure, but I think they may be planning a sequel...