The Rocky Horror Picture Show Is A 1975 British-American Musical Comedy Film That Parodies Science Fiction And Horror Films. Still In Limited Release 33 Years After Its Premiere, It Has The Longest Running Theatrical Release In Film History. It Gained Notoriety As A Midnight Movie In 1977 When Audiences Began Participating With The Film In Theaters Across The Country And Is One Of The Best Known And Most Financially Successful Midnight Movies Of All Time. In 2005, The Film Was Selected For Preservation In The United States National Film Registry By The Library Of Congress As Being "Culturally, Historically, Or Aesthetically Significant." The Film, Considered A Cult Classic, Is An Adaption Of The British Musical Stage Production The Rocky Horror Show.