Other mistake: During "Cool," there's a shot where they're doing a sort of knee turn, and you can see Tucker Smith in the background spinning too many times (you can see him start to stick out his arms to stop himself). (01:58:20)
Other mistake: When Nardo is piercing John's ear, it's obviously just him and the Sharks, but then in the shot from above, you can see all the Jets running to the rescue. Also, Ice is already there, throwing a Shark off of John.
Continuity mistake: In the scene right before "cool" when the two girls are crying, when they enter the garage their clothes are different.
Deliberate mistake: The knives at the rumble bend EVERY time they move.