In 'The Cave' scene when it's thunderstorming and Hulk and Betty are in the cave...
-A very UNNATURAL lightning bolt strikes nearby.
-Hulk throws a boulder at the sky? Hmmm...
-As he screams at the sky...(Hmmm...) and we pan to the right, in the bushes, if you go frame by frame, you can see a red, white and blue pattern appear on CAPTAIN AMERICA'S SHIELD AND CHEST.
-Then after that same pan, lightning strikes the same spot FOUR TIMES and a "tube" or "portal" (-if you will) appears. Then, a big, black dot jumps from the "tube" or "portal" and lands on a ledge in the top right of the screen. (It's best to watch THOR in slow motion. You CAN see THOR in regular motion, you just gotta look in the top right after the pan with CAPTAIN AMERICA.)
SO! What does this mean? THE AVENGERS ARE HALF-ASSEMBLED (At least.) during the 'Incredible Hulk.' That means Cappy was found shortly after Banner made it to the arctic.
Want some MORE THOR? If you listen to the commentary, the director directly references THOR using his name: "...maybe Thor saved them..." (The rain came pretty conveniently didn't it?) THEN...the news reporter specifically reported "...violent thunderstorms in the..." whatever the hell the mountains were called. Hmmm...that works out pretty well for Banner, eh? It's almost as if he was given time to calm down and turn back into his human self, so then THE AVENGERS could get him without any harm done...hmmm.
THEN...at the end of the movie, that second helicopter seemed to suprise everyone...even the military and T-Bolt Ross. Almost as if to run Hulk away from danger and into safer hands...
Marvel is giving us sooooo many clues...you just gotta know what to pay attention to. So go look at the crucial cove scene AND the scene before it IN COMMENTARY. Or else you won't hear THOR'S NAME IN THE MOVIE.
Oh, you're welcome. (J/K)