Classic Cameo Alert! Watch early in the film as Travolta leaves a dance studio. Director Sylvester Stallone bumps into Tony on the street and turns camera-side for a moment with a scowl. Criticised at the time for not being able to keep his ego out of any film he was involved with, I always looked on the moment as total brilliance due to Travolta's hint of recognition.
In the first scene (the auditions) and later, in/after the show, Ben Lokey can be seen. He gets picked by the director to move on, but Tony gets booted. He played Kelly's evil dance instructor in the movie "Breakin'".
Actress 'Karen Lynn Gorney (Stephanie)" was originally going to play small role, as one of Tony's friends; however, the original script went thru several revisions and she ended up as his love interest.