Factual error: Burt describes MRE's and then gives a few to Earl and Grady. He then hands them several vacuum packed silver foil packages. These are not MRE's. MRE's are wrapped in dark green or tan plastic and are a bit bigger than the packages shown.

Audio problem: In the scene where the Grabboid is pulling the truck with the chain attached and the guy is trying to shoot it, the gun noises do not match up with the muzzle flashes at all. At one point it is obvious he fires 2 shots, and yet 4 "bangs" can be heard.

Continuity: In the scene where the Graboid is pulling the truck you can see that there is a gunrack and a gun in it. Right before they are about to hit the rock you can see that the gun falls off of the gunrack. The gun goes on and off the rack between the following shots.

Revealing: It's very clear they blew up a model of the buildings. The grass seen just before the explosions is way too long and is not as long when the characters are running away. Further, the truck and the barrels have disappeared at the explosion shot.

Continuity: In the scene when Grady says "son of a..." when the Graboid is dragging the truck, there is a shot of the truck driving forward.

Revealing: When Grady & Earl blow up their first graboid, one of the pieces of orange goo that hits the truck flies in from the LEFT. All the other pieces of orange goo get flung in from the right.

Continuity: One shrieker kills Julio. Barely 30 seconds later it's killed by Earl and Grady. Yet when we see outside views of the office, there is no sign of the dead shrieker, blood, or Julio's corpse.

Audio problem: There is a scene just after Earl and the new guy arrive at their base, when a truck (driven by one of the Mexicans I think) pulls up from the left hand side of the shot. If you listen you can only hear the truck's engine from when it comes into shot. This suggests that it was waiting just off shot and then drove in, rather than coming from any distance as you would have heard it approach.

Continuity: In one of the first scenes when Grady and Earl are riding to the oil site, Grady attempts to take the last soda. If you watch Grady closely when Earl tries to play Rock, Scissors, Paper at first he is holding up his right hand, then it goes to Earl, then it goes back to Grady holding up his left hand.

Continuity: After Burt gives the double rifle to Grady he closes the box he got the rifle from. Over the next shots the box changes from being closed to open and closed again two times as the shot changes.

Continuity: When Kate is introduced by Senor Ortega, she is introduced as Kate Riley, but the credits list her as Kate White.

Visible crew/equipment: In the shot where the camera examines the hole in the wall and car made by Burt shooting the shrieker. You can see the shadow of the cameraman on the wall and his reflection on the car (near the top right corner).

Continuity: The scene where Fred is trying to rope the ostrich he gets pulled for a couple of feet and looks up at the bird. If you notice his shirt is dirty from being pulled by the bird. When he gets up to meet the taxi his shirt is magically clean.

Factual error: As Burt is driving, he is producing a video diary. He indicates it is 1900 hours (7PM) on May 14th, and yet it is pitch black outside. Nowhere in Mexico would the sun have set by 7pm in May.

Continuity: At the end where the building explodes, everyone stands up from the pit but if you notice, Burt is standing up in one scene but in the next he is kneeling down.

Continuity: Just before the guy gets sprayed with the fire hose. he wraps a jumper around his hard. When he takes the jumper you see he has no gloves on. Then when he asks for gloves the camera cuts to a different angle and the gloves are on him even though he never even took them off the other guy to put them on.

Continuity: When Burt is hiding in the bulldozer scoop, Grady looks down at him from the top of the oil tank and we see that Burt has his knife in his hand. However, in the next scene, we see him pull the knife out of it's sheath on his leg.

Continuity: When Earl enters the barn after being hosed down with CO2, the amount of vapor as he warms up varies from shot to shot with it almost not appearing to it heaving pouring off his clothes.