Revealing mistake: When John tries to stop the van while Maggie is driving, because he sees the small girl in the road, as the van screeches around the road, you can see the road is covered in tyremarks from previous takes. (00:20:10)
Revealing mistake: Right before the John Doe gets pulled through the roof of the van by the dream parachute, you can see the premade cuts overhead for the stunt person to be pulled through.
Revealing mistake: In the memory scene, young Freddy kills a hamster with a hammer. But you can blatantly see that he hides the hamster under the table and then pretends to hit it with the hammer. (01:10:20)
Suggested correction: I just watched the scene in question, and he most certainly does not "blatantly put the hamster under the table." In fact, the scene is filmed in closeup and you can't see where he puts the hamster, but the motion of his arms seems to suggest he puts it directly down on top of the table.
Wrong. I watched this scene carefully and I saw young Freddy hiding the hamster under the table. It's much too obvious, even without slow motion. This entry is correct. This is a mistake.
Revealing mistake: After Freddy stretches the blackboard vertically, it switches to a closeup shot of him peering out from the side of the board. If you look closely at his glove, you'll see clear plastic caps on the tips of the knives. You'll also see them when he scrapes the board with his pinky and the final time he runs his hand across the board. (00:36:30)
Revealing mistake: When Freddy controls Spencer to the top of the stairs, Spencer stands right at the edge of the top stair, and leans forwards. As he does so, if you look at his shadow on the wall you can blatantly see the shadow of the harness and thick wire attached to him, keeping him from falling. (00:45:55)