What the Hulk did to Loki is alone worth the admission!! The lunch scene was hilarious and yet a perfectly logical scene: even superheroes gotta eat.
When Banner said, "I'm always angry; that's my secret!" I almost choked on my soda. He's finally accepted that he is the Hulk and can actually get some fun out of it. That is the appeal of the Hulk; there are always times when we wish we were the Hulk. I wish he had talked some more, though.