Visible crew/equipment: When Julia's attacker ties her up with the lamp cord, in two of the shots facing Julia the boom mic can be seen above her at the top of the screen.
Other mistake: When Regine becomes the new host of Fright Night, she appears on video monitors and Peter Vincent is watching her on TV while in a bar. Cameras use mirrors, so she shouldn't have appeared on the monitors or on the television at all.
Suggested correction: Most cameras don't use mirrors. Only DSLR/SLR cameras do, which allows you to use a viewfinder. Other cameras, camcorders, and television cameras don't need mirrors.
Other mistake: Watch when Carol is singing "Oh Come All Ye Faithful," as she walks down the line of on-lookers, an extra in the back moves along with her and keeps looking at the camera.
Factual error: The Los Angeles cops pursuing Lulu, Peaches, and Darlene in Mexico couldn't arrest them due to this being a foreign country where they wouldn't have jurisdiction.
Factual error: Right after the movie shows us a sign telling us that we are in NJ in 1937, here you have Ginevra Boynton reading the March 1938 issue of Daring Detective, which even plays a larger role in the story later. (00:00:35)
Revealing mistake: When one character's killed, stomach sliced open, you can see the wire yanking open the prop stomach to the left of the camera.
Revealing mistake: When Jemma enters the headshrinker's laboratory, there is a table with three heads on it each encased in glass. When it goes in close-up on the middle head, you can see that the table has a hole where the actor can slip in his head.
Revealing mistake: Clearly not Susan Blakely when she goes topless. Her hair suddenly becomes curlier, that's a body double.
Other mistake: When translating Dutch for English, one translation uses "their" when it should've been "there." It's in the scene when we first see the lead cop talking to his daughter.
Revealing mistake: In the scene where Zuckerman is thrown to the floor in the gym and handcuffed, you can hear the handcuff ratchet click as it's placed and closed on her wrist. As the other agent moves away, you can see that the handcuff is open and not actually closed around her wrist. (00:31:00 - 00:31:50)
Continuity mistake: When the condo manager shows up at Billy's house to take Purple, and chases him round the garage, some stuff, including a white plastic basket, falls off a shelf twice; first in the wide shot, then again in a closeup of Purple's feet.
Visible crew/equipment: At the end, the helicopter filming the shots of Dallas is blatantly visible in one of the buildings.
Visible crew/equipment: A boom mic is visible when Charlie and Scully are talking while walking. (00:16:00)
Character mistake: Kathy Ireland as Wanda speaks mostly in a slightly squeaky voice. But in one scene she uses her own regular voice.
Visible crew/equipment: When Nicolas Cage returns to his apartment, you can see a crew member reflected in the mirror on the wall right after Cage passes in front of it. (00:11:35)
Continuity mistake: Many editing mistakes with the 'accidents' including the guy at the weight set, when his ribs crack through his skin. In the following shot all is normal again.
Audio problem: When in the bar before being put in the cell, Dolph grabs a gun from an MP and starts shooting up the bar. The sound of gunfire starts a split-second before he starts shooting.
Continuity mistake: When Chris has a gun aimed at Evelyn he's holding it with his right hand. A shot behind him and suddenly it's in his left hand.