Continuity mistake: When Dr. Ross and Bruce are in the hotel room, Banner empties the purse on the bed and there is some cash inside the wallet. As they are about to leave he picks up the cash, which isn't in the wallet anymore. (01:08:10)
Trivia: Stan Lee (Stanley Martin Lieber), the original creator of this comic book hero, has his usual cameo role in this movie. He's the guy who drinks the gamma contaminated soda from the fridge.