Visible crew/equipment: When a gremlin attacks the Mum from a Christmas tree, and the tree falls on top of her, you can clearly see a member of the crew with eyeglasses, wearing a red shirt, standing behind the tree pushing it forward on top of her. (00:54:30)
Trivia: When Billy's mom takes the picture of Gizmo at the beginning, Gizmo becomes frightened and runs over to Mr. Peltzer. When the scene is slowed, you can see the puppeteer's hand underneath while operating the Gizmo doll. Not a mistake as needs slo-mo, but worth a look. (00:19:10)
Continuity mistake: When Rand is showing the old man his invention, he pulls the toothbrush up, and it is facing away from him. When the shot changes the toothbrush is now facing him. (00:02:30)
Visible crew/equipment: As Mrs. Deagle is walking along the street, carrying the broken snowman head, as she passes one store, clearly reflected, a little ahead of her, is a man carrying the boom mike. (00:10:00)
Continuity mistake: When Billy accidently squirts shaving foam onto his father, by use of the bathroom buddy, the foam around Rand's mouth disappears between shots. Foam also appears on his glasses between shots then disappears too. (00:27:15)
Continuity mistake: After Rand squirts the toothpaste all over his jacket, it all completely disappears after he gives the shop owner his card. (00:02:45)
Continuity mistake: When Pete is laying on Billy's bed talking to Gizmo, in one shot he's laying on his stomach, then in the next shot he's laying on his side. (00:23:55)
Continuity mistake: Soon after the Gremlins hatch from their cocoons, Billy goes to the school to check on the professor. When he walks into the classroom, he leaves the door open. Later, when he leaves the classroom, he has to open the door again. (00:49:20 - 00:50:30)
Factual error: For a movie supposedly set in late December in a Northern state, all of the deciduous trees still have leaves on them. The most obvious place to see this is in the opening scene, when Billy is trying to start his car in front of his house. (00:07:05)
Continuity mistake: When Billy puts the santa hat on Gizmo, in the first shot the hat is folded backwards so that the bobbled end is hanging behind the hat. In the next shot it hangs over the front of the hat. (00:19:45)
Revealing mistake: As the second Gremlin in the kitchen is flinging dishes, the control rods attached to the puppet's left arm is visible.
Continuity mistake: When Billy smashes the Candy store window the amount of stuff behind the glass changes between shots. (01:27:50)
Continuity mistake: When Billy's mom grinds the Gremlin in the food processor, the fridge to the left swaps from dirty to clean. (00:54:35)
Continuity mistake: Before Mrs. Deagle is attacked a portrait appears on her table between shots. (01:08:25)
Chosen answer: The precise cut-off point is never stated - I've generally assumed that the embargo on feeding finishes once the sun comes up.
Tailkinker ★