Revealing mistake: In the beginning right before the opening dance number begins, Gwyneth Paltrow and Steven Spielberg (in cameo roles) do back flips. You can see the stunt double doing them as the stunt double was wearing a blond wig (depicting Paltrow) that falls off after the first flip. (00:04:22)
Revealing mistake: In the scene when Austin Powers goes to visit Dr. Evil in prison to ask about his father there is a shot of Dr. Evil with Austin's head partially in it. If you look at his reflection in the glass, you see he looks nothing like Austin. The person in the reflection is actually a body double. (00:21:20)
Revealing mistake: When Austin first sees Foxxy in the nightclub, she is singing with two back up girls and doing the same dance moves as the back up singers are doing. You clearly see that the back up singers dance to the right and Foxxy goes to the left, then corrects herself. (00:24:30)
Revealing mistake: At the end of the movie, as everyone is standing up in the cinema and Thin Bastard shouts "Hey Powers," you can see the stand-in actor playing Dr. Evil as he turns to face Mini Me. (01:23:00)
Revealing mistake: During the opening sequence, when we see Austin doing backflips down the red carpet, you can see that Austin's double has dark skin.
Revealing mistake: When the first sumo takes off his "diaper" and throws it in the basket, you can see he is still wearing something.
Revealing mistake: During Dr. Evil's prison rap, there is a group of girls circling around Mini Me. One of them has her chest pixelated to create the illusion that she's topless. However, you can still tell that she has a top on, because you can see shades of gray in the pixelation.
Revealing mistake: When the Shaguar does a burnout to head towards the Apache Helicopter, we see the burnout from a previous take in front of the tire.
Revealing mistake: When Austin is ejected from the Shaguar to fly over the Apache helicopter, we can see its a dummy being ejected from the front shot of the car.
Revealing mistake: When Austin is looking at the 3 sailors who were to guard his father, there is only 1 golden source of light seen reflected in his glasses, not 3 as there should be.
Revealing mistake: In the fighting scene with Austin and Mini-Me it is very obvious that a puppet supposed to be Mini-Me is smashed to the door of the minibar.
Suggested correction: Nothing indicates in the film that sumos are necessarily naked under their layer.