And, since this is a trivia site, while you're giving me some details on the participation, I'll give you some "facts" about Rocky Horror. (gathered from the IMDB site and a "behind the scenes" show)
In the opening wedding scene, Riff Raff and Magenta parody Grant Wood's American Gothic painting.
The original screenplay called for the movie to be in black and white until Dr. Frank N. Furter appears in the elevator, when it was to go to color after zooming in on his lips.
The movies referenced in the title song are, in order:
The Day the Earth Stood Still (1951)
The Invisible Man (1933)
King Kong (1933)
Doctor X (1932)
Forbidden Planet (1956)
Tarantula (1955)
The Day of the Triffids (1962)
Night of the Demon (1957)
When Worlds Collide (1951)
Oakley Court, Dr. Frank N. Furter's "castle," was used in numerous Hammer horror films made at adjacent Bray Studios (where the lab and ballroom scenes were shot), including The House in Nightmare Park (1973), The Reptile, (1966), The Brides of Dracula (1960) and The Man in Black (1949). Built in 1859, it was refurbished in 1981 and made into a hotel,
where rooms cost from 150 to 195 British pounds per night.
In the opening wedding scene, the minister is Tim Curry (Dr. Frank N. Furter), the "old man" to his left is Richard O'Brien (Riff Raff) and the "wife" to his right is Patricia Quinn (Magenta). The spinster who joins them inside the church is Little Nell (Columbia).
Aside from the chemical symbols scrawled on the lab wall next to the control panel, there is a grocery list calling for flour, eggs, bread, sugar and two hypodermics.
As Eddie rides his motorcycle up the ramp to the observation platform in the lab, a Transylvanian jumps onto a nearby statue, knocking its head off.
Meatloaf did not ride a motorcycle. In order to get the close up of his riding up the ramp, they had him roll a wheelchair. [Linda's note: If you watch, you can see this plainly! He's definitely wheeling in that scene!]
The movie was banned in South Africa several weeks after release by the Board of Censors, but not before it had been seen by some 250,000 viewers and had a strong cult following.
The opening number, "Science Fiction Double Feature," contains references to many classic science fiction films. Originally, the credits rolled over a montage from these films, but audience reaction was poor.
When originally released, the prints were done in monaural sound. Later, Lou Adler decided to re-mix them into stereo. In the stereo print, many vocals no longer match the actors' mouths, extra sound effects were added, Peter Hinwood's vocals are very different, Janet's scream is cut off when Frank comes out of the elevator, etc.
Many of the guests at the wedding are Transylvanians.
An extended final number appears in some American prints and the British tape release.
It is rumoured that one country replaced the deleted "Once In A While" number by using lookalikes for Barry Bostwick and Susan Sarandon.
The set builders forgot to put an extra door in the lab set, thus Dr. Scott had to crash through the wall for his entrance.
The crew had an easter egg hunt one day on the set, and three eggs can be seen in the film: under Frank's throne, one instead
of a light in the main room, one as the group goes up in the elevator to the lab.
The set used for Frank-N-Furter's castle was not heated during filming, and Sarandon caught a cold after the pool scene.