Factual error: During the scene on the Helicarrier where Bruce Banner "Hulks out" and jumps at the F-35B hovering just outside, we see the F-35B fire its guns, one inside each of its intakes. The F-35B has only one gun, externally mounted to underside of the fuselage. It would be impossible to mount a gun inside an aircraft's intakes.
Other mistake: What special "something" does Nick Fury use to pick the Cosmic Cube up at the beginning of the movie? All I saw was that he had on a glove, but in Captain America it was said only people with special abilities could handle it, and even later in the The Avengers when Banner is moving the cube, he uses a gadget and he's the Hulk! Did I miss something?