Other mistake: In the slaughterhouse scene, after Harrigan has injured the Predator with his shotgun and Keyes reappears, the Predator throws its disc, and severs Keyes in half at the waist. We see his legs flop to the ground, and blood pour from above, but his upper half (torso, backpack and weaponry) mysteriously remain hovering out of sight. (01:21:50)
Other mistake: At the carnival, you can see an African-American man staring at the camera for a while. I am unsure if he is a crew-member watching over the scene, or if he is just an extra trying to get onscreen.
Revealing mistake: Doug has the hologram when inside the alien nuclear reactor, and a bunch of bad guys encircle the holographic image and fire at it at point blank with automatic weapons, and not one bad guy gets hit. If they encircled the 3D image, at least a few bad guys would have been hit by their own men. (01:37:00)
Continuity mistake: At the start of the movie when the gun store is being robbed, one of them fires a portable rocket launcher at the police car, causing it to roll over and spin. As it comes to a stop just outside the store, it's visible that the driver's side window has been blown out, and the vehicle interior is visible, however when the same guy prepares to fire the bazooka to finish it off, the window has returned and is completely intact.Mercury
Revealing mistake: When the scientists inject the mouse with poison, they put it in a jar. The, after they place it down you can see someone's hand swap the jar for one containing a dead mouse. You can even hear it. (01:17:58)
Revealing mistake: When the lawn mower the heroes send off as a diversion crashes you can see a wire pulling it. (01:01:30)
Factual error: Asystole (the lack of cardiac activity, also known as the 'flatline') is not treated with defibrillation (electric shocks) but with alternating doses of the drugs epinephrine and atropine.
Continuity mistake: When the Jetson family leaves Earth and is headed towards their new home for the rest of the movie, George and Jane switch places when Jane leans over to kiss George.
Continuity mistake: In beginning of the dvd there is a scene where the farmer meets the sheriff and the farmer has a shotgun. When the farmer has the gun, it has hammers; when the sheriff has the shotgun, it does not have hammers. (00:05:05)
Continuity mistake: After Cody leaves prison and gets in the car with his friends, we see him letting Angel into the back seat, then just two seconds later, when the camera switches to the view of the prison, we can hear the engine started. He couldn't wait for Angel to enter, then enter himself and start the car in two seconds.
Continuity mistake: Lisa drives Sam to the hospital and is met by Dr. Marsh. Dr. Marsh puts on a protective eye mask, before administering a syringe of luminous substance into Sam's arm to stop him projecting fire, but the next scene shows him not wearing the mask then it's back when disposing of the syringe.Paul Andrews