The blue GMC Yukon that they drive in one scene is dirty, almost looking like it has dried wax on it, but the next scene the vehicle is clean and shiny.
The police dog's water dish moves just before the dog grabs the cocaine.
At the briefing, Russo's water disappears and reappears between shots.
When the skinhead aims his gun at Corky, the gun is sideways from the skinhead's view. From Corky's view, the gun is upright.
When Corky drives his car for the first time, he turns the steering wheel sharply, but the car doesn't change direction.
When Mrs. Hernandez is trying to take her cat out of the kennel, a close-up shows an obvious fat suit on the cat.
When Corky is being searched, the searcher is behind Corky, to the right, as Corky speaks. Corky is saying something, but from the position of his mouth his is clearly laughing.