A group of people that performs a movie in front of a screen while that movie is playing; they essentially pantomime the movie. Most often seen during showings of The Rocky Horror Picture Show.

A shadow cast is when there is screening of a movie and people will shadow the movie in costume. Most known for the Rocky Horror Picture Show having thousands of shadow casts in America. All of the time they will be held at night or in the morning so the theater won't loose any money showing it. Also the group performing needs to rent the movie from the company that realsed the film. Most of the time the shadow cast is of cult films.