Banner gives the whole speech about trying to kill himself by eating a bullet and how it didn't work, yet the second he starts to get out of hand Fury and Blackwidow reach for their guns. UH HELLO were you not listening two minutes ago to his "I tried to eat a bullet and it didn't work" story?

When they capture Loki and they're on the jet, Stark and Cap are chattin' it up an Cap is standing with his back to the camera with his hands on his belt - it looks like he's takin' a leak.

When Stark and Thor are fighting, who, exactly, is keeping an eye on Loki to make sure he isn't making a run for it?

With all the hightech equiptment that S.H.I.E.L.D. has why did no one see Hawkeye when he was strolling across the deck of the helicarrier and there were no sensors that alerted them to the fact that they broke into that air shaft or whatever? I don't know it would seem logical to me... Also when Hawkeye and crew are running about the Helicarrier and he shoots the arrow on the flight deck and it highjacks the computer system why does no one notice this rather obvious arrow sticking out of the computer console? It isn't exactly small. I realize things are a bit confused and people are running about in a panic, but if the computers are going haywire woundn't that be more of a reason to notice it because you'd be checking the systems at all the stations?