When Tony tries out for the second show, he wears number 46. In one quick shot, he wears number 40, his number from the first tryout.
Tony works as a waiter at the disco. At one point, he gets bumped and drops his tray, which is full of glasses. A beer bottle falls.
In the beginning of the movie, Tony is dancing wearing layered white and black legwarmers. In the same scene, he is shown wearing layered red and black legwarmers. When the scene ends, he is wearing white and black layered legwarmers again.
During the rehearsal segment, the camera crew is reflected in the mirrors.
When Tony is pacing the lobby waiting for the phone call, tape is visible on the floor, marking where he is supposed to stop and turn around. In wide shots, the tape is gone.