The Shining (1980)

Continuity mistake: In the scene where Hallorann is talking to Danny over ice cream, when the shot pan to Danny, the amount of ice cream stains he has on the side of his mouth changes.

Other mistake: When Jack Nicholson is talking to the manager of the Overlook Hotel, the manager mentions the death of two girls aged 8 and 10. When Danny sees visions of the two girls they are unmistakably twins, not different ages. A quick look at the IMDb (http://uk.imdb.com/title/tt0081505/fullcredits) proves they are - Lisa and Louise Burns, both born in 1968.

Other mistake: When Stuart Ullman is showing Jack and Wendy their quarters, there is a window on the wall to the right across from the bed. However later, when Jack tries to break into the bathroom with the axe and Wendy puts Danny through the window onto the hill of snow, their quarters is not on a corner of the hotel, which the aforementioned window would suggest. (00:22:45)

Continuity mistake: When Wendy is trying to escape through the small window, she leaves the room with the lights on, but in a view from outside the lights are off, then Jack passes by and the lights are on back again.

Continuity mistake: When the Danny is meeting with the chef in the kitchen, and Danny is eating ice cream. The amount of ice cream in the bowl changes from a little to a lot.

Continuity mistake: When Shelly Duvall is crying, backing up the stairs and swinging a bat at Jack Nicholson, the positions of both of their arms and the bat change dramatically as the camera shots switch back and forth between them.

Continuity mistake: Wendy is smoking a cigarette when Danny starts screaming, then she runs into the bedroom and opens the door, and doesn't have the cigarette.

Revealing mistake: In the shot just before when Jack finishes axing the bathroom door, one of the broken pieces of wood is resting against the camera.

Continuity mistake: In the scene at the beginning of the film, when Doc and Mr. Hallorann are eating ice cream, if you pay attention to Danny's hands, they move from folded in front of the ice cream bowl, to the back, and so on. They move about 5 times, each different.