Stark had been saying all along that Banner needed to let go - i.e. to let himself change into the Hulk for a purpose (at least, that's the implication I took, and I think that was pretty strongly implied.) When he changed first, he had just been arguing with the others and was already angry with them. He was distrustful and felt a but betrayed or used. All this was exaggerated by Loki's influence (at least, again, I think that was the implication of the scene with the staff). So when he was unexpectedly hurt from the fall and unwillingly transformed, it was just berserk Hulk, attacking those he had just been angry with as Banner.

Everything about the context of his transformation at the end was different.

And don't forget the scene with Harry Dean Stanton.

The guy provides Banner with some reassurance, when left to his own device, the "other guy" is concerned with the safety of others. He steered himself toward the abandoned building rather than harm anyone.

Nice catch!

Joe is correct. Joss Whedon explains his intent with that scene.

"Banner falls into a Coen Brothers movie!" priceless

So awesome I saw it twice on opening day.

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It was pretty good. I thought this was going to be more of an Iron Man movie but everybody got a chance to shine.

My initial reaction to the BW/Loki conversation was, how is this happening? SHIELD doesn't have surveillance on this? Then about two seconds later I figured it out. The Master of Mischief didn't realize he was being pranked. Like I said, bad writing.

Damn, didn't even think of that.

It never occurred to anyone the first BW interrogation scene was foreshadowing?