Popcorn (1991)

Continuity mistake: When the killer rips his mask off to expose his face to Maggie, his eyes go from brown to yellow between shots. It is explained later that his yellow eyes becomes brown thanks to colored contact lenses, but the killer does not remove any contacts when rips off his mask.

Continuity mistake: As the giant mosquito flies toward Mr. Davis, Davis has the remote control which controls the mosquito hanging around his neck. In the very next shot the remote control has disappeared.

Continuity mistake: When "Tina" ties up Bud in his wheelchair, she puts a belt around his body. The belt shifts/rotates around his body between shots (you can tell by a patch on the belt, which moves around).

Toby: Without memory, there can be no retribution.