Corrected entry: During the end sequence, Spider-Man originally did his final swing through the World Trade Center towers, landing on top of the tower with a flagpole on top. This was changed after September 11th so that he lands on the Empire State Building instead. However, during the pan around him after the landing, you can still see the Empire State Building, which he just landed on, in the background!
Corrected entry: In the beginning, when Peter runs out to catch the bus, he swings his backpack over his shoulder, but when he is seen running after the bus, the backpack has disappeared.
Corrected entry: When you first see the cable car (at the end) it says Universal Pictures. When you see the car the second time, it says Roosevelt Line.
Corrected entry: In the building fire, there are 2 windows still intact at Spider-Man's arrival. He busts out one by swinging through it, and when he leaves with the child there is an explosion which blows out the other window. Thus no windows should remain intact. But, when Spider-Man goes back into the building to rescue "the woman" (Green Goblin) he smashes through another window.
Corrected entry: When Peter enters the wrestling arena and we see Bonesaw fly off the corner of the ring, the guy on the floor has his arm across his body/stomach. Yet, when Bonesaw flies through the air, you can see the guy on the floor move his arm ready for him to land on top of him. (00:35:20)
Corrected entry: Peter Parker practices web shooting for the first time in his bedroom. When Aunt May checks on him the webs criss-cross the room from wall to wall. Think about it... he's shooting the webs from his wrist. What we should have seen was several strings hanging from the walls. To get the room as we see it, every time he shot a string he would have to walk to the other side of the room and attach his end to the opposite wall. Not likely. (00:32:20)