Man to Man, Beast to Beast - S1-E6
Other mistake: When Gabriel Jones talks with General Ross, his fingernails are perfectly visible, even though he is wearing gloves.
Other mistake: When the elder Tongzing and Tenzing walk through the bushes, they simply pass through them, the bushes don't react to them moving through. (00:18:50)
Other mistake: When we see Betty being surrounded by the ninjas reflected in the pupil of Bruce's eye, the reflection is not reversed. (00:02:08)
Other mistake: After Hulk re-enters the Earth's atmosphere, his pants are still intact. It's one thing for Bruce Banner's pants to stretch enough to remain in place when he turns into the Hulk. It's another for them to somehow not be burned off in re-entry.
Other mistake: When Bruce Banner is loosening his bow tie, he says it's cutting off the circulation to his head. If you look closely, you can see that it was loosely wrapped around his neck to begin with.
Other mistake: The reporter in the opening scene mentions that the Chateau de Shae is 80 floors. The camera then pans up the entire length of the building, and you can see it is nowhere near 80 floors high. It's only roughly half that size.
Other mistake: When Lou Ferrigno is walking away from the reporter, his movement suggests that he is walking on a downward slope, even though he is on level ground. He also disappears into thin air just before he would have stepped out of view.
Other mistake: The reflection of the spotlights in the water in the opening shot does not match the movement of the spotlights themselves. (00:00:01)
They Call Me Mr. Fixit - S2-E4
Other mistake: When Crusher Creel is saying "Dr. GQ there is gettin' just a little too cozy for his own good," his head has been drawn wider than his bowler hat. (00:08:49)
They Call Me Mr. Fixit - S2-E4
Other mistake: When the receptionist is telling She-Hulk about the highrise with the eyes, the eye shaped windows on the building shift slightly up and to the left as the camera zooms in.
They Call Me Mr. Fixit - S2-E4
Other mistake: When She-Hulk is sleeping on the plane, her locks of hair are somehow tucked behind her left eyebrow. (00:03:34)
Other mistake: When Dark Hulk lifts up the middle army tank, he rotates the tank towards the two tanks on either side of it and fires the tank gun at both of them. Since he's holding the tank from the bottom, he has no way of controlling the tank gun, and there's no reason the tank's gunner would fire on his own men.
Other mistake: Throughout the episode, you can see that the animators drew Doctor Strange's fingernails, even though he is wearing gloves.
Other mistake: When She-Hulk is looking at her eyes in the mirror and raises her left hand to her face, only the hand in the reflection is raised. Her actual left hand doesn't raise.
Other mistake: When She-Hulk walks into her parents' house, they are shocked to discover her appearance. She-Hulk's identity as Jennifer Walters is public, as she is still a trial lawyer, and the previous episode showed that she has celebrity status. We know she and her parents aren't estranged, because moments before she tells the Hulk that they know about him, which she could only know if she kept in contact with them, so there's no conceivable way they could have been unaware of her transformation as well.
Other mistake: When She-Hulk is climbing the tree to speak to the Hulk inside the treehouse, you can see the doorway to the treehouse is barely large enough for her to fit through, so there's no way the Hulk could have fit through without damaging it. (00:06:06)
Hulk of a Different Color - S2-E1
Other mistake: When Betty is watching surveillance footage of her father attacking the gray Hulk, the footage is same clips from earlier in the episode, camera angles, shot changes and all. Not to mention it's extremely unlikely she would happen to have surveillance cameras in the exact random area of the desert where the attack happened.
Darkness and Light: Part 1 - S1-E11
Other mistake: When Doc Samson attacks the convoy, he begins by bursting his hands out of the asphalt. This is pretty illogical, as for him to be able to wait for the convoy to reach him and then break his hands through the asphalt at the right moment would mean he would have to be inside the road itself, which means there would have to be a void between the layer of asphalt and the surface beneath it large enough for a person to fit inside, which would be a hazard, as the weight of cars passing over would eventually cause this section of the street to collapse.
Darkness and Light: Part 1 - S1-E11
Other mistake: When Betty is trying to revive Bruce, a console explodes and a corridor is revealed that soldiers emerge from. It makes no sense for a heavy piece of machinery to be blocking the way into a corridor if blowing up the console is the only means of getting in or out.
Darkness and Light: Part 1 - S1-E11
Other mistake: When Gabe Jones is observing Doc Samson and Hulk emerging from the cave system in his rear view mirror, you can see his car is moving forward, but the image in the mirror remains the same size. (00:11:10)
Answer: The Hulk is a giant brute who smashes everything in his path when he is angry. In Ang Lee's "Hulk," General Ross, played by Sam Elliot, explains it to his daughter.