Twins

Visible crew/equipment: When Arnold throws one of the Clane brothers into the elevator, you can clearly see the cable that pulls him backwards. (00:23:49)

Visible crew/equipment: While Webster is with Garfield and Larsen getting information about the car, he tells Garfield to sit down, and in the shot facing Garfield just as Webster says, "I got a reputation to uphold," the boom mic dips into view at the top of the screen (visible on the fullscreen version only). (00:38:45)

Super Grover

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Visible crew/equipment: When Julius enters the supermarket parking lot, in the long shot we can see the stunt ramp used to lift the driver's side of the car, to go into ski mode. In this and following long shots of the stunt, we can also see the window roll cage bar directly behind the front windshield (the obvious stunt driver grips the roll bar with his left hand and steers with his right hand), as well as the top of the seat supports behind the front headrests. (00:30:55)

Super Grover

Continuity mistake: There is a scene where Arnie and Danny DeVito are in the washroom of a nightclub. In one shot there is a beer bottle on top of a paper towel dispenser, and in the next shot it's on the other paper towel dispenser. (01:11:15)

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Vincent: Now I know you're probably used to growing your own vegetables and spearing fish on the lagoon. But here on the mainland, we just nuke it.

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Question: How could Mary-Ann not know she was giving birth to Vincent shortly after Julius was born? Wouldn't she have felt another intense pain to indicate she was going into labor a second time? Plus, how would they be able to keep the birth of Vincent a secret from her in the first place?

Answer: She could have been unconscious by that point.

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