Continuity: Near the beginning, when Banner arrives at the lab with his helmet on, he removes the helmet when he sees Betty. A close-up of his face is shown and his hair is messy with part of his fringe on his forehead. Betty is shown quickly, then the same shot of Banner is shown again, but this time his hair is perfect.

Continuity: The hole in the car windshield changes size from when the Hulk throws the dog through it to when it's shown the next morning.

Continuity: When the Hulk is standing in the street, we see him standing in the fountaining water from the smashed hydrant but his hair never gets more than damp.

Continuity: In the scene just after the Hulk has destroyed the tanks in the desert, the camera cuts to the genera. In the first shot we see him touch the side of his head with his hand, then in the following shot his hand his on his forehead.

Continuity: Near the beginning, when the other scientist accidentally trips the gamma machine on, Bruce helps to get the guy's gas mask on. In one shot, when Bruce throws the scientist to the ground, he is holding onto the gas mask with his right hand, then in the following face shot he is holding it with his left.

Continuity: The breast pockets on Betty Ross's denim jacket switch from buttoned to unbuttoned between shots when she is confronted by David Banner in her house at night, and again, later, when she approaches the Hulk in downtown San Francisco.

Continuity: Near the beginning of the film when Bruce first turns into the Hulk, he tosses the gamma machine out of the lab and into the road outside, but if you use frame by frame or slow motion from a view on the inside the gamma machine reaches the outside, and a view from the outside is showing the machine just coming out of the wall.

Continuity: When the dad of the hulk comes to see his son for the "deal" he made to turn himself in to the military. You can see the type of handcuff the dads wearing changes kind two or three times in the scene.

Continuity: When Bruce first turns into the Hulk, his wallet is seen coming out of his back pocket. When it lands on the floor it is in front of him.

Continuity: When Bruce and Betty are in the cabin, Betty gives Bruce breakfast, and in one shot we see Bruce look at Betty, then a shot from the back shows he is looking down at the plate, then a face shot shows him looking up and at Betty again.

Continuity: When Bruce first arrives at the lab in the beginning of the movie, Betty tells them that they have to present to the review board on Tuesday. After the experiment where the frog explodes Bruce asks Betty what should they present for Monday.

Continuity: Near the end of the film when the Hulk gets up on the cliff side to look at the choppers hovering by him, if you look where he is standing there is a small round rock behind him in this shot, but in all other shots that rock has vanished.

Factual error: In the scene where General Ross is calling in the desert with a satellite telephone, he is using a Thuraya satellite phone. These phones only have coverage in Europe and a large part of North Africa. Since he is using the phone in the US, the phone shouldn't work there.

Continuity: When Bruce and Betty are in the middle of the desert, Betty walks to the door where Bruce's parents were arguing, he walks to the door and opens it. He looks in but Betty is still looking at Bruce in this shot, yet in the following shot she is looking in the room.

Continuity: Near the middle when Bruce and Betty have lunch, she says "were you at the lab?" Bruce isn't looking at Betty, he just shakes his head. In the following shot, his head is slightly turned and he is now looking at Betty.

Continuity: In the middle of the film when Bruce is being taken down into the underground facility in the desert, we see guards standing around his container where he is sleeping. Look at the front, and there is a guard in front of the container with his left arm resting on it. Then it cuts to another shot, this guy is no longer in front of the container nor has his arm on it, this happens between shots. (Zoom in is required).

Factual error: The Hulk picks up a tank, swings it around and hurls it about a mile away where it crashes into a sand dune. The impact should have been as strong as a plane crash, but a few shots later, they show one of the tank crewmembers standing casually outside the tank, watching the Hulk. All of the men inside the tank should have been seriously injured from the impact, if not dead.

Audio problem: During the scene where Bruce's father is giving him the green dinosaur toy and the monkey toy and suggests making them have a fight, the boy "Roars" but his lips don't move at all, in fact his mouth is shut.

Factual error: In the scene where they're in the lab and on the computer screen they show a strand of DNA you see cc matched up many times. If they knew anything about biology they would have matched C (cytosine) with G (guanine) which is the proper way in which DNA replicates.

Deliberate "mistake": When Hulk meets his father at the lab, each one's eyes have a special light on them. This adds for dramatic effect, but it's absurd because there is no direct source of light since each one is in front of the other and their faces are in shade in the rest of the shots.