Continuity mistake: When Cane's agent gets out off the bookstore and crosses the street, the cars keeps changing all the time between shots.
Visible crew/equipment: When Vincent is washing his face in the bathroom at the diner, you can see a male crew member's face in the mirror.
Continuity mistake: When Ernest is messing with the pipe in the locker room the toilet seat in the middle stall goes from being up to down and back up again.
Visible crew/equipment: After the little girl leaves the grocery store with Dodger, the monkey, the overhead microphone can be seen above her head.
Factual error: In one scene Cobb and the sportswriter doing his biography are driving across the country to get to the baseball Hall of Fame. They are stopped next to some railroad tracks fixing a flat tire, and a train goes by that has Burlington Northern markings (BN). Burlington Northern didn't come into existance until ten years or so after Mr. Cobb died.