Revealing mistake: When the two station reporters are investigating Eddie's room, as the female bends down to the table, she is scared by a dog. In one shot you can see a black wire on the dog. (00:14:55)
Revealing mistake: During the fight scene, when the young man pulls Gen. Besh's pistol and fires it, the pistol is shown close up and slow motion. The pistol doesn't cycle. (I.E. the slide doesn't recoil to load another round) This make it obvious that the pistol is loaded w/blanks and no blank adaptor.
Revealing mistake: Morgana has smoke coming out of her mouth as she recites "The Charm of Making". If you look closely the smoke is being expelled from a tube next to her left cheek that at times is not even close to her mouth. (02:06:00)
Revealing mistake: Burke kills Mary Roberts. She blinks when he turns her head to check out her face. (00:47:10)
Revealing mistake: In the scene right before the dragon picks up Ulrich, you can see the dragon pass through Galen and Valerian. (01:41:45)
Revealing mistake: While the two dudes are talking up about getting girls, the couple behind them appears to be making out - but the girl's face is resting into the guy's shoulder while his head moves about. (00:19:31)
Revealing mistake: During the fight between Harry and TG near the end, several times you can see when TG hits Harry that the spade bends. (01:21:15)
Revealing mistake: When Chevy Chase is dreaming that he is flying and coming in for a landing you can see the rod that is holding him up as he is squirming around while flying. (00:28:00)
Revealing mistake: In the letter to Mike Gallagher attached to the newspaper, subscription is misspelled. Sally Field is a reporter, so she should have caught that. (01:19:43)
Revealing mistake: During the final battle one of the bad guys is blown through the air due to an explosion - but right behind him you see the springboard used to launch him.
Revealing mistake: The first time David werewolfizes, we're treated to the complete process... hair developing, bones painfully lengthening and twisting... and the torso of the actor very visibly halfway in the floor while all this is going on to the full-body werewolf prosthesis. Oh for computer graphics at the time to erase that detail of the process.
Revealing mistake: When Tarzan walks over to Jane who's in the water, he's wearing a thong under his loincloth. (00:45:50)
Revealing mistake: When Da Silva has finished shooting on the police firing range, the camera does one last shot of the target and you can see the squib detonator wire hanging from the hole that's just been created in the head area of the target.
Revealing mistake: When John Jaffrey is lying dead in front of his medicine cabinet, he is still breathing.
Revealing mistake: Obvious stunt doubles replace Cameron and Kim when they run from the telephone box just before it explodes. (01:20:09)
Revealing mistake: When the photographer is shot by Thana, his blood can be seen being thrown from offscreen. (00:36:54)
Revealing mistake: The Prowler's just killed Lisa in the pool, yet he's walking across a lawn completely dry. Clearly this is footage reused from when he was outside the dorm earlier.
Revealing mistake: During the flashback to Ginny's operation, you can tell it's a prop head due to the color of the part where the operation's taking place.