Other mistake: In Sarah's room, after the close-ups of Lancelot's empty shelf space and of Sarah beginning to say, "Someone..." as she finishes, "..has been in my room again," in this wide shot, while still on her bed until she leaves her room, there is a mark across Sarah's forehead that extends to the left side her eye. It isn't in the previous or following shots. (00:06:40)
Continuity mistake: In the park, Sarah begins reciting the lines, "Through dangers untold...beyond the Goblin City..." and her hair in back is pulled up very loosely in her barrette, seen clearly as she speaks. Yet in the shot of her back, when Merlin barks, her hair is twisted perfectly in the barrette. (00:03:20)
Continuity mistake: As Sarah starts to run down the labyrinth, just after she's entered it, the ribbons on the back of her jacket go from tied to loose then to tied again. (00:18:45)
Continuity mistake: When Sarah is putting lipstick on, the newspaper clippings and photos on her mirror change position and arrangement between different angles and shots. (00:06:05)
Visible crew/equipment: In Goblin City, a small boulder jumps into the mouth of a cannon just as a guard yells, "Fire!" After exploding, the guard then says, "Hey, I just fired you," as the "cannonball" hops around near the cannon yelling, "Ouch, ouch, ouch!" and the wires attached to it are visible. (01:25:30)
Visible crew/equipment: A cannonball goes flying, when Sarah and the gang are at the Goblin City (The one that says "I hit something? Yes? No?") and as it heads towards the wall, you can see the wire it's attached to. (01:18:30)
Other mistake: When Sarah is in the room with the old hag who lives at the rubbish dump, the old hag asks, "What's the matter, dearie? Don't you like your toys?" Connelly is mouthing the hag's lines, presumably as a prompt to recall her own lines. (01:10:45)
Continuity mistake: When Sarah shows Hoggle her plastic bracelet in the oubliette, when trying to get him to take her as far as he can to the centre of the labyrinth, in one shot she holds the bracelet between her finger and thumb, then in the next shot it is dangling off her finger. (00:31:05)
Continuity mistake: This can only been seen in the letterbox version of Labyrinth. After Sarah says, "It's all junk," the garbage lady grabs a ballerina music box and says, "Well what about this, this is not junk," and hands it to Sarah. She takes it, then for a second it cuts back to the garbage lady. The music box is still sitting on the table after it was handed to Sarah. (01:13:45)
Deliberate mistake: When Sarah, et al are surrounded by the Goblins in Goblin City, the first cannon fires causing an explosion in front of some buildings, one of which has a hanging sign with scissors on it. Later, after the squatty Goblin says, "Hey! I just fired you!" another cannon fires causing an explosion, and the very same shot is shown, only the first one was flipped. (01:20:15 - 01:25:35)
Revealing mistake: At Jareth's castle, in the room with the Escher stairs, Sarah sees Toby and she jumps. It's very apparent that it's a stuntwoman jumping from the ledge in the wide shot. (01:30:20)
Revealing mistake: When Sarah discovers Toby has gone from his cot, Goblins start moving about in her fathers room. The second goblin we see laughs, and jumps down from the top of her fathers four poster bed. As the goblin does this, you can see the shadow of a boom mic bob down onto the material that drapes from each poster of the bed. (00:11:05)
Continuity mistake: When Sarah is telling the story to Toby, she stands in front of the mirror, and puts Toby's stripy hat on. In one shot, she pulls it to the back of her head, but in the next shot, it's pulled down on her head, as normal. (00:07:40)
Continuity mistake: When Jareth's shadow menacingly appears on the rug beside the crib, Sarah's legs face the doorway on the rug - which has light stripes parallel to the doorway. However, in the close-up of Sarah's legs, when the snake/scarf turns into a Goblin, her legs face the doorway and the rug stripes run perpendicularly. (00:11:50)
Revealing mistake: Sarah looks at Hoggle in her vanity mirror and he says, "Well why didn't you say so?" As Sarah starts to stand up it is obvious where the two shots are edited together with her back to the camera, so that at the end of this "one" shot, Sarah's room is filled with her new friends. Her vest's back ties and blouse sleeves are different in the two shots that are edited together as one. (01:35:35)
Revealing mistake: Sarah walks over to Ludo as he hangs upside down. Just before she says, "Now, stop that," she takes a step back as Ludo growls and shakes his head around. On his upside down scalp inside his fur a metal clamp on the black material under the fur is visible. (00:43:05)
Visible crew/equipment: When the second rock that Ludo calls rolls towards Sarah, the wire attached to it is visible. (00:40:55)
Visible crew/equipment: First in Sarah's father's bedroom, as Jareth holds and flits the crystal back and forth in his hand, then at his castle as Jareth holds the crystals while sitting in the window and in the scene with the drifting stone as Jareth holds one crystal, objects are reflected upside down within the spheres. Studio lamps and its lights are visible, as well as reflections other than Jareth and Sarah. (00:12:40)
Continuity mistake: When Sarah walks into the darkened bedroom, in the shots facing the double back doors the hanging light fixture over the crib, the mobile, and picture beside it are all visible. When Jareth appears, in the first shot facing him, the mobile hangs lower (note the archway), the picture is closer to the floral trim around the archway; and solely for Jareth's dramatic entrance, the light fixture is gone - though it should easily be visible in this shot, and the crib is now at an angle. (00:10:25 - 00:11:55)
Continuity mistake: When the Goblins are spooking Sarah in the dark bedroom, she spins round as a few pop out at the same time (near the vanity table, from the dresser drawer...), and one lifts the lid of a brown case atop the tall dresser. However, in the previous shots of the well lit room and when she first entered the dark bedroom, that case was gone - replaced with flowers. (00:08:35 - 00:11:35)
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.