Went to the midnight premier and loved it. Best superhero movie I've ever seen. I loved Banner/Hulk. Just the way Ruffalo presented himself and also refered to Hulk as "the other guy" like some vain attempt to push away the monster. When he was on screen there was always this lingering feeling that he could hulk out and kill someone, a man teetering on the edge of violence. And when the Hulk finally does come out, it's devastating.
I was surprised Whedon decided to have Hawkeye be a villain for a good portion of the movie, but when he came back I felt bad for him and by then you knew some of the backstory between him and Black Widow which I feel they both deserve their own movie. Either a team up or solo. I guess it's jut because Hawkeye is one of my favorite characters from the Ultimates (meant to be avengers sure, but he had a very ultimate feel, costume and personality-wise). I loved how funny it was too. So many good moments. Just fuuuuuuuck, my mind just melted from how awesome that movie was.