Revealing mistake: When Jack and Marty are shot at in the hotel room and the second bullet hits the window the glass pieces are flying from a different spot from where the hole appears. (00:33:25)
Revealing mistake: When Jack and Marty drive the skinny lady to her inbred folks Jack follows one of them into his house. He has a terrarium where a snake is just swallowing a screaming but otherwise lifeless rat. (00:50:15)
Suggested correction: The rat's last dying gasp? Morticians will also tell you that if you compress a corpse's chest, the deceased will make moaning noises as air from the lungs is forced out and past the vocal chords. Why couldn't the same process happen with a rat?
Revealing mistake: Jack pierces the snake owner's hand with his pen with the hidden blade. In close up you see that the hand is a prop: it has a different colour, and there is already a mark where the blade is about to go through. (00:51:20)
Revealing mistake: When Jack's car falls down into the quarry there is not only the notorious exploding motor but also another explosion in the back for which there is no reason. (01:11:15)
Revealing mistake: When Jack and Marty go back to LA they drive by two stuffed but nevertheless mooing elks. (01:29:05)
