Continuity mistake: Through the song "Chilly Down," a tree branch is seen, as one of the Fireys hangs on it. This branch is short in close ups, but much longer in wide shots. (00:49:10)
Revealing mistake: When David Bowie throws a crystal ball into the corridor it is the start of the cleaner scene. The frontdrill of the cleaner appears in the distance. This is animated as it rotates fast. Once the actual device is visible the drill rotates in fact fairly slowly. (00:34:25)
Visible crew/equipment: Just after Jareth kicks the furry little creature way up towards the camera, he sings, "Jump, magic, jump..." To his left, when the little guy 'leaps' high into the air, in front of Jareth's throne, the wires attached to both sides of his shoulders are visible. (00:23:55)
Revealing mistake: In the Goblin City, toward the end of the fight scene, one big boulder rolls towards a group set up like ten pins. As it hits them, you can see the plungers used to pop the dummies in the air.
Continuity mistake: During the Magic dance scene Jareth throws the baby up in the air but when he lands he's turned 180ยบ.
Visible crew/equipment: As "Chilly Down" ends, Sarah is pulled up the ledge by Hoggle. When it shows Sarah, and the Fireys flying behind her, above the first Firey that flies up, the wires are seen.
Continuity mistake: When Sir Didymus threatens Ambrosius with no food to stop his retreat, as the dog walks back into the shot you can see the gray and white mixture on his head. In the close up, the dog's head is all white.
Other mistake: As the cannon the Goblin army brings rolls to a stop, the smoke jet used to simulate shots is visible.
Continuity mistake: The two-headed axe the gate guardian grabs wasn't there when the gate closed.
Audio problem: Watch Agnes the Junklady's mouth as she picks up Charley Bear. The second time she says Charley Bear before putting it on Sarah, her mouth doesn't move.
Continuity mistake: As Ambrosius goes to cross the rocks, he switches from having gray and white on his head to all white, then back.
Other mistake: As Sarah looks at the opening that she can't readily see, the vine on the right side goes from sharp to blurry at the top of it.
Continuity mistake: As the white owl flies in and around the room, it is flapping wildly, but the owl's shadow is flapping at a considerably slower speed. (00:11:50)
Continuity mistake: When Sarah and her stepmother are arguing at the start of the film, Sarah's hair is completely soaked from the rainstorm, but a few minutes later, when she's at her vanity table and her dad is talking to her, her hair is completely dry, and there's no way she could have dried it that quickly, even if she used a hairdryer.
Visible crew/equipment: Just after falling into the Bog of Eternal Stench, the duo are moving along the ledge. As it breaks away, there is an overhead shot where you can see a white and blue piece of equipment at the top left corner of the shot. I don't know what it is but it's not in the next shot so it's not something natural to the Labyrinth. (00:55:45)
Continuity mistake: Towards the end of the "Chilly Down" scene, the firey with the long thin mouth and ponytail on the top of his head jumps on Sarah. The others gather around her. Then the chubby firey says, "Come on, Come on!" calling over another firey; however, all five fireys are in the shot around Sarah. The following shot is of the top half of a firey bouncing over on his hands, but this is the same firey that already jumped on Sarah and is still on her. (00:53:10)
Continuity mistake: When Sarah kisses Hoggle, they fall through a hole and end up in the Bog of Eternal Stench. They walk the narrow cliff for a while and then Sarah falls onto solid ground and finds Luto right there next to her. Then Hoggle falls. Somehow, without Luto moving, Hoggle ends up under Luto. Luto never sits down. He is pushed to the ground when Hoggle falls on top of him. His butt is on the floor before Hoggle lands.
Continuity mistake: As Ludo pops up in the tower of the house in Goblin City, the roof goes over behind him and stops as if on a hinge. A moment later as he calls the rocks, the roof is missing.
Answer: To add to that, the other door was supposed to lead her to certain death, and technically the oubliette wasn't exactly certain death.