During a screening at the Fantasia Film Festival fans threw white feathers from the theater balcony which showered down on the audience in homage to the haunting finale of the film.
The scene where Brett bows in front of the mirror to reveal Wallace standing directly behind him is done in homage to Dario Argento's film Tenebrae (1982), which Michele Soavi was an assistant director on.
Before his death in 1999 Joe D'Amato was planning to remake Stage Fright as Willy Shocks Treatment, the film was to take place in a TV station which was reopening where years earlier a TV host called Willy Shocks had killed his wife who he found having an affair, years pass and the TV station reopens for the murders to start again. The killer would have worn a costume made out of light-bulbs instead of the owl mask that's in Stage Fright. Another idea Joe D'Amato had was set on board a cruise ship heading for Barcelona, the killer was to have been a mad violinist.