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.

Other: In the scene in the desert, when the Hulk picks up the tank by the turret, the hull of the tank stays attached. The turret actually isn't attached to the base, it sits on a rotator ring and is held in place by gravity. (Turret weighs about 25 tons, if I recall).

Continuity: In the beginning when Bruce and Betty are talking, her fringe changes several times during the scene.

Continuity: Betty is touching the door panel to scan her identification but in the next shot she has not reached the door yet.

Continuity: In the scene where Nick Nolte is in Bruce's lab, after he exposes himself to gamma rays his hair is almost completely black, but in the rest of the movie it is greyish-brown.

Continuity: In the middle of the film when David Banner transforms himself at the lab's gamma machine, he attacks a black cop. Watch closely, just after David Banner lifts the floor up sending the cop flying towards him you can see he is lying on his back in one shot then lying on his side in the following shot. (Slow-mo is required).

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.

Audio problem: During the scene where Talbot approaches Betty by the elevator, it splits and in doing so the top left screen does not speak, but the bottom right does, and they are supposedly "Sync"ed.

Continuity: In the middle of the film when Bruce is in the cabin with Betty, just after he discovers a noise outside and gets shot by a tranquiliser, if you watch closely the tranquiliser is at the side of the leg, then in the following shot when we get another view of it from the floor it is at the front of the leg.

Continuity: When Talbot calls out to Betty as she walks in the entrance to her building, in the background a cyclist gets on his bike and puts both feet on the pedals then starts to ride off. When it cuts to a view of Talbot, the cyclist still has his left foot on the ground and isn't moving.

Other: In the scene in the underground base, where the Hulk is destroying the area, when the General orders them to turn out the lights and show him the way out, the keyboard that she grabs to type in the commands is not plugged in. Right as she grabs the keyboard, you can see the plug laying on the floor beside it.

Continuity: When Bruce Banner is submerged in the holding tank at the desert lab, he has hair on his chest. But when he changed back from the Hulk at Betty's cabin, his chest was smooth.

Continuity: When Betty walks down the stairs to calm the Hulk down the camera angle from the front shows her hair blowing in the wind, but the camera angle from the back doesn't.

Continuity: At the start of the film when his foster mother comes in to wake Bruce up, her hand on his head changes slightly between shots.

Continuity: When Talbot goes to visit Bruce in his holding cell in the underground base in the desert, Talbot pokes him with a cattle prod of some sort. In this shot the screen splits into two. Bruce puts his hands up in the air when he gets zapped, but the other view on the screen shows that he still has his hands by his side. (Slow motion may be required.)

Continuity: When Betty takes Bruce back to his childhood home, she sits on a swing prior to entering the house. The swing is moving as the go into the building but is stationery a few moments later (it wouldn't have had time to come to a complete standstill).

Revealing: When Hulk rips the turret off the tank and swings it around in the desert has a solid base. This is correct for a model but not for a real tank which has a hollow turret for the tank captain to stand up from the bottom of the tank through the turret and look out the top.

Continuity: When the Hulk breaks out of the government lab, he pushes up a round staircase and a soldier jumps behind it. He is then seen right in front of it when the camera angle changes.

Continuity: When Betty is talking to Bruce about accepting their breakup, the camera from the front shows her looking right at him, but the camera from the back shows her looking down.