Other mistake: When the cleaning crew is leaving Joe's apartment, you can see a green Oreck commercial vacuum. The handle is on backwards.
Other mistake: In one shot, a man is leaning over Feng and speaking in Chinese to him. The woman sitting next to Feng translates and says that it means the man has to go to the bathroom. Feng explains where it is and sits down. After, it switches shots to show the man leaving Feng's "throne" in the backround and sitting down, not going to the bathroom.
Other mistake: When Beverly Farley asks her son, John, where he has, she states that she thought John was going to ride together with her and Mr. Woodcock, to the awards ceremony. But later, when she leaves the ceremony she is mad in her own car, and Mr. Woodcock's car is right next to the awning. So Beverly and Mr. Woodcock did not drive there together. (01:00:20 - 01:06:10)
Other mistake: In the scene in the beginning when Chazz Michael Michaels is being introduced, there is a brief shot where Chazz is alone skating in the same storage where, much later in the movie, Jimmy and Chazz practice for the World Wintersport Championship.