Revealing mistake: When Wilson crashes the truck towards the end of the film, you can tell it's actually a stunt driver because he has a full head of hair.
Revealing mistake: The seen where Teddy is standing in rain talking to Charlotte in her car you can see how the rain followed his movement. There is a thicker spout of water dripping and you can see the outline of it.
Revealing mistake: The robber who kills Billy's mother is shown cutting her throat but with the flat side of the blade. Moreover real blood doesn't ooze out so thickly, indicating it was makeup.
Revealing mistake: As the biker punks roam the streets disturbing shoppers and merchants and endangering people sitting quietly at the cafe tables, the majority of the extras are actually laughing and having a great time even when they are yelling and waving angry fists. (00:14:40)
Revealing mistake: The scene with one of the girls in the Pi house undressing on the TV was filmed with a handheld camera. Lewis tells Lamar to pan the scene right which it does. Cut to the scene of the woman undressing and the scene is shaking, like someone is holding the camera. These should be stationary shots. We even see the camera that is filming the shot and it's strapped down with a periscope.
Revealing mistake: The evil ninja blows a dart inside the barrel of a gun making it explode when the bodyguard fires. Forgetting the fact that the movement is unnatural and patently phony since the film is reversed, the dart also fully 'disappears' inside the gun and yet again when we see the guy about to shoot there's an inch-long of dart sticking out of the gun. (00:04:20)
Revealing mistake: The outline of Divine's wig is obvious during the closeup when she's scolding her donkey at the beginning.
Revealing mistake: When Jake is driving his car to run down Vince, there is a quick shot just before he hits him that is obviously a dummy placed in front of the car.
Revealing mistake: The ammo box that is removed from the purse is for blank studio type cartridges, and not ballistic ammunition.
Revealing mistake: At the beginning when the one monkey falls to its death, it's obviously a stuffed animal posed as a dead monkey.
Revealing mistake: When Melvin jumps out of the window, the person who falls out isn't actor Mark Torgl but a stunt double.
Revealing mistake: Near the end, Clint Eastwood picks up a lamp in anger and throws it across the room, but there's no power cord attached to the lamp.