Revealing mistake: After Mary Robert jumps out of the car, you can see the stunt double falling for her.
Revealing mistake: When the terrorists drop the dead body out the aircraft door, look closely at the aeroplane just beneath the door, you can see the reflection of the mat the stuntman lands on, as well as the spotters around it.
Revealing mistake: When Tim Curry runs out of Kevin's hotel room after being scared by the inflatable clown doll he hits his knee on a table. When he hits the table and then hops away you can clearly see that he is wearing a knee-pad.
Revealing mistake: In one scene, the Penguin is making a "bat" shadow puppet on the ceiling. But there's no light behind his hands. If there's no light, there's no shadow. (01:03:45)
Revealing mistake: The film is supposed to be in Alabama, but it was actually shot in Georgia. You can see this when Vinny and Mona are first pulling into the town and they are turning left, in the shot you can see the Georgia State Highway road signs off in the distance. (00:13:20)
Revealing mistake: In several driving scenes, the cars are visibly higher than the rest of traffic. Obviously a flatbed truck was used instead of a trailer for the filming of the interior shots.
Revealing mistake: In the scene where Tom Cruise is yelling at/questioning Dawson at the jail in the witness room, immediately after Cruise gets up in Dawson's face and says, "I'm the only friend you've got," Cruise is supposed to simply turn and walk away. But you can see from the angle behind Dawson that Cruise' first step is a step down, indicating that he was on a pedestal of some sort to bring their heights closer together.
Revealing mistake: When El Mariachi is trying to escape Moco's men by sliding down a wire onto the bus, he first throws the ball-and-chain-weapon over the wire. But then when he slides down, you can see a pulley device that he is using, not the chain. (00:26:45)
Revealing mistake: Right after Jake escapes from Tao's pinning him to the track towards the end, Tao is electrocuted, then falls to the tracks. When he stands up, he sees a train heading towards him. He cries out, sticks up his arms, and is hit by the train. In a quick shot just as the train hits, him, however, it is painfully obvious that it is actually a dummy that was placed in front of the train.
Revealing mistake: Very poor diopter work on the Las Vegas stage: the audience is "split in half", one part very blurry behind DeVito's head, and the other half crisp and clear.
Revealing mistake: About halfway through, when Dil throws the goldfish bowl out the window, the goldfish aren't flapping around on the ground, like they should do; they're either dead or fake fish.
Suggested correction: Of course, the fish are dead. They were thrown out an upper floor window, and the bowl smashed onto the street. The man even picks one up and yells "murderer" after he sees it dead.
Revealing mistake: When Sean shoots at Dennis the Bookseller's feet, puffs of sand do not erupt from the ground.
Revealing mistake: It's a stunt double when "Ray Liotta" falls down the stairs at the end, just look closely at how different his face is. You can even play it in slow motion, and it becomes more ridiculous. (01:45:15)
Revealing mistake: In the scene when Crow Horse and Levoi are running from Coutelle and the "GOONS", they go off-road toward the stronghold. You can see in the grass the tire tracks from all the other takes. Especially as there is no reason any vehicle would leave the road at that place otherwise.