Revealing mistake: Near the end of the movie, when Johnny Depp's eyes are removed, he talks with the boy when he's against the wall. In several shots you can see Johnny Depp's eyes through the sunglasses. (01:33:55)
Revealing mistake: In the scene where Johnny Depp is searching Cheech Marin by the river, you can see Cheech breathing, even though he is supposedly dead from the gunshot in the scene before.
Suggested correction: There is a feature on the DVD that shows the making of this scene, and that a dummy was used.
Incorrect. What they did was use digital effects to blend the fake eye socket of the dummy onto a shot of the real Cheech Marin because the dummy didn't look real enough in close-up. So, that actually is Cheech Marin, and you can, in fact, see him lightly breathing once or twice. The only part of the dummy you can see in these shots is the area immediately around his right eye, where they blended footage of the dummy in. They specifically said on the DVD that the dummy didn't look real enough to be used on its own. I'm not sure how you could have missed that part on the special feature because they show how they blended the two shots.
Revealing mistake: When Antonio Banderas jumps into the Cadillac to escape from the bikers, there is a wide shot of him driving the car while being chased for a few seconds where you can very obviously tell he is not driving the car. It is a stunt double, and a very skinny one at that. In fact it almost looks like a woman. (00:55:50)
Revealing mistake: You can see Jorge's hair move, as a hair dryer blows in his hair, right before Ajedrez rams her gun in his head. (01:05:05)
Revealing mistake: Watch carefully when El Mariachi says "Then I guess I have no choice but to kill you all" to Cucuy, and he fires a shot. You can see a black outline on the shirt of the guy's shirt who's hit right before sparks shoot out of the place of impact. This happens on other occasions too. (00:51:40)
Revealing mistake: After Carolina is shot dead her corpse breathes a little. (00:57:00)
Revealing mistake: When the mariachi wakes up after being tranquilized by the dart, he beats a couple of guys. Then he turns around shooting a guy in his head. If you look closely you can see blood being splattered on his head from the lower right corner. (00:57:40)
