Poltergeist III (1988)

Visible crew/equipment: When Carol-Anne is running away from Kane's voice in the garage, she ends up standing in a puddle, only to have hands pull her in seconds later. But when the camera moves down Carol-Anne's body to the puddle, you can see the platform the actress is standing on.

Factual error: When Bruce and Patricia are in a lift after being chased by the cars in the garage, the lift rapidly descends but the two people in the lift are seen struggling on the floor when they should just about be on the ceiling due to the speed of the lift's descent.

Revealing mistake: When Carol Anne has been hypnotized by the shrink, a hand breaks through the desk and throws a coffee mug through the mirror. You can briefly see the reflection of the plexi-glass protecting the actors behind the mirror as the mirror breaks.

Trivia: At the end of the movie, the Carol-Anne that Pat is holding is really a double, because Heather O'Rourke died from intestinal stenosis, shortly before the movie was finished.

Trivia: Carol Anne's name is said 121 times over the course of the film. The movie is 98 minutes long (including credits), meaning it is said 1.2 times per minute.

TedStixon

Trivia: At several points in the film, Carol Ann's movements do not sync up with her movements in the mirrors in her bedroom. Director Gary Sherman confirms on the Scream Factory commentary track that this was actually done on purpose, given the nature of the mirrors in the movie and the evil counterparts of several characters.

THGhost

Tangina: My God! he found heR.

Pat Gardner: You look great! Now remember, less is more.

Kane: Tangina.

Question: Whatever happened to Scott, Donna's boyfriend? Donna and everybody else returned after Tangina left with Kane, but did he?