Thank you, Riddle, someone else not taken in by Ruffalo. He really was bland. Someone mentioned that Norton's Banner was angry and bitter, and of course he was, he's been chased halfway across the world and kept on the run, poor guy couldn't even get it on with Betty without the possibility of triggering a change. This is where the end of Incredible Hulk leads you believe that Banner has finally gained control, and he could have advanced from the angry bitterness. Freed from those feelings, Ed could have expanded greatly on Banner's character.
Hell, if anything, they should have explained Banner got himself some plastic surgery to look so different. LOL