Revealing mistake: When they're dancing on the bowling alleys, they couldn't be waving their bowling balls about as if they were made from foam - bowling balls are heavy!
Suggested correction: Bowling balls can weigh as little as 3 pounds.
Revealing mistake: When the oldest son is being pursued by the unseen entity whilst the family is seeing the priest. You can see a crew member in green pants and brown shoes to the left as the camera perspective turns upside down.
Revealing mistake: When the boys are racing away on their bicycles from the Feds, the stunt doubles for Elliott and his friends are obviously way too tall to be children.
Revealing mistake: The dead woman who is found at the beginning of the movie takes a rather deep breath at the end of the shot. (00:02:40)
Revealing mistake: During the Eddie and Nick fight scene, you can clearly see the stuntman for Eddie. He looks nothing like him.
Revealing mistake: During "Run Like Hell", when Pink's followers set an attack dog loose on an innocent man in the alleyway, the foam protective sleeve is visible on the victim's arm.
Revealing mistake: At the end when Mr Norris starts to run through the hallways looking for the punks, he is ambushed and beaten up. If you look closely at his shirt, you can see a small pad underneath on his left, the exact spot where they keep punching him.
Revealing mistake: During the autopsy scene, it's obvious that the Panther is still breathing when it's supposed to be dead.
Revealing mistake: Throughout the film and specifically near the end after Jim has reclaimed Bess and the colt, there are visible horseshoes on the supposedly "wild" horses. While there would logically be a number of abandoned and escaped horses among the herd at any one time, those who joined them in a shod condition would not remain so very long in rugged country. Those born into the wild would never have worn shoes. Reason dictates there would be very few if any horses remaining shod at any one time.
Revealing mistake: The actors all have the speed, form, and physique of high school athletes- not people headed to the Olympics.
Revealing mistake: When Rick is having sex with Carmela, it's obvious that it's completely fake. The filmmakers tried to hide it by filming through the keyhole and only showing half their bodies but at one point you can see that Rick is lower than Carmela. Also Carmela is voiced over because her voice doesn't match her mouth. (00:43:10)
Revealing mistake: When Foley is in his karate suit in the blip hanger he is choking Daniels, but his hands are very loose around his neck.
Revealing mistake: During the final fight sequence between Paul Kersey and Nirvana at the hospital, at one point you can see that Kersey is not Charles Bronson but his stunt double.