Deliberate "mistake": At the end of the movie when everyone is on the bridge, the one female cop roundhouses the bad guy, who is clearly a white male in his 50's, but his stunt double is an Asian man (with different colored hair). They use the same stunt man a few other times for people he doesn't even look like.

Continuity: When they are driving away in the white car they go on their side and drive around and then get flipped back up and there is no damage to the car whatsoever.

Factual error: The locations mentioned in the film are all over the world, including South Africa and Rotterdam. During the car chase through South Africa, it is very clear that all the locations in this car chase are in Rotterdam. For example, at one point the car drives down stairs through a shopping-mall, this is a well-known landmark in Rotterdam. As a matter of fact it is about 1 kilometer from the bridge used in the finale of the movie.

Other: During the final fight on the roof, it is possible to tell that one of the two bad guys is played by two different actors. The first time Jackie fights the one wearing the waistcoat, you can clearly see the actor's face. However, when the bad guy jumps over an air vent, doing a spinning kick, look at his face and you will see it is a different actor. In addition to this, it is possible to see that the second actor is shorter.

Visible crew/equipment: When Jackie Chan is standing on top of the tower, and shouts "Who am I?", the camera starts to circle around him. When it does this, you can clearly see a guy in a white shirt standing underneath, and then hides away in the corner! It's really clear to see.

Other: When Jackie is running in the wooden shoes he sees a dog falling from a piano being raised in the air. In two of the four shots that the dog is seen falling, you can see that it is a doll.

Continuity: When the "smart" scientists are at the power plant one of them picks up a CB backwards and talks into it.