Revealing mistake: At Fenway, when Ray sees the scoreboard cycling through images, watch the crowd below the scoreboard. They jump as if the scene cuts or is looped.
Revealing mistake: In the dream sequence while Bruce is now the Hulk, if you look closely beneath his green wig, the black hair of the actor is visible.
Revealing mistake: When the Russians are in the Finn's trench, you see the Finns stabbing the Russians. If you look carefully, on a few of the Russians you can see protection visible. (00:48:45)