Monsters, Inc.

Factual error: In the scene where Waternoose and Sully are talking, Waternoose gets himself some "coffee", which is sludgy and thick and takes quite a while to pour from the machine. Seconds later, he takes a very quick sip. Since the liquid was so thick and there was little in the cup, it would be impossible for it to pour that fast.

Monsters, Inc. mistake picture

Factual error: The map of the world on the scare floor shows Australia without Tasmania. This is best seen late in the movie after Boo has returned home, Sully is now management and when Mike asks him to follow him you can clearly see the world map behind Sully showing Australia and no Tasmania. (01:23:30)

Factual error: After Mike rebuilds Boo's door, it shows a few crack lines but is otherwise intact. But the shredder created a lot of sawdust so it would be impossible to rebuild the door using only the wood pieces. (01:20:00 - 01:24:10)

Monsters, Inc. mistake picture

Other mistake: Near the end of the film, when the identity of 0001 of the CDA is revealed, number 0112 is shown both standing next to 0001 as Roz enters the room and behind Sully and Mike on the opposite side of the room. (01:16:45)

More mistakes in Monsters, Inc.

Henry J. Waternoose: There's nothing more toxic or deadly than a human child. A single touch could kill you. Leave a door open, and one can walk right into this factory; right into the monster world.
Trainee: I won't go into a kid's room. You can't make me.
Henry J. Waternoose: You're going in there, because we need this. Our city is counting on you to collect those screams. Without scream, we have no power. Yes, it's dangerous work, and that's why I need you to be at your best. I need scarers who are confident, tenacious, tough, intimidating. I need scarers like... like... James P. Sullivan.

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Trivia: Mike and Celia have dinner at Harryhausen's. This is a tip of the hat to Ray Harryhausen, the great stop-motion animator.

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Question: Why does Sully get surprised at the end of the movie when he sees Boo?

Answer: He's not as much surprised as he is pleased to see her. She's going to be a little older than when he last saw her because it took Mike so long to rebuild the door. So if he's surprised, it may be at how much she's grown in that time period.

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