Audio problem: When Natasha is tied in a chair and she fights her way out. When she reaches the third man and "head butts" him, her head is several centimeters away from his and her hair is the only thing that touches him, but we still hear the sound of a hard impact. (00:14:25)
Audio problem: When Bruce Banner meets Natasha Romanoff for the first time in Calcutta, there's a shot from behind her where Natasha is heard talking but her reflection in the small mirror behind Bruce isn't. (00:17:45)
Audio problem: In the scene where Black Widow is hanging off the back of the flying Chitauri chariot, one of the Chitauri fires his gun, but there is no sound effect to go along with the blast as there is with the other blasts. (01:51:50)
Audio problem: When one of the computer operators resumed playing Galaga, the sound effect heard is for an enemy ship attempting to capture the player's ship, but what's shown on screen is normal gameplay.
Answer: During the end sequence of The Incredible Hulk Banner discovers that he can aim the Hulk in the right direction, give it a goal, which he uses to defeat the Abomination in that film. Key to that appears to be willingly accepting the transformation into the Hulk, which he does by choosing to jump from the helicopter. On the Helicarrier, Banner doesn't want to transform, it's caught him by surprise, he's fighting it, which is why it takes ages, is seemingly very painful and, as an involuntary change, the Hulk is out of control. In the final battle, Banner chooses to make the transformation, to "suit up", as it were, and thus the change is swift, painless and results in the cooperative Hulk capable of working with the others towards a goal.
Tailkinker ★