Continuity mistake: When Eddie escapes the deep freeze, he wears three rings on his left hand: his middle, ring and pinkie fingers. Bizarrely, the pinkie ring actually disappears in quite a few shots, including when Eddie plays the sax and when he lifts Columbia, just before they mess around on the floor. (00:42:30)
Factual error: The criminologist describes the events of the movie as taking place "on a late November evening". In the very next scene, Brad and Janet are driving in Brad's car, and President Richard Nixon's resignation speech is playing on the radio. Nixon resigned in August of 1974. (00:12:00)
Revealing mistake: When Rocky climbs the RKO tower, he carries lifeless Frank-N-Furter on his back. In the wideshots facing the stunt doubles' backs, while Rocky has both of his hands on the tower, the very much dead Frank-N-Furter has his right arm firmly around Rocky's neck to hang on.
Revealing mistake: Just minutes after Rocky's creation, when he is lifted out of the tank, there is a nice close-up of Rocky's face. The newly created man with the "Charles Atlas seal of approval" has a few silver fillings in his upper right teeth, which are easily visible as he sings, "Over my head and I've got the feeling..."
Revealing mistake: When Rocky lifts Frank-N-Furter's body Rocky is barefoot, wearing only the stockings. When Rocky is climbing the RKO tower, carrying his creator, evidently Rocky is wearing a type of thin shoes under his stockings. The stunt double did this as a safety precaution. (01:30:35)
Revealing mistake: The saxophone Eddie plays in "Hot Patootie" has no reed. (00:43:10)
Continuity mistake: After Frank-N-Furter gets out of the pool, and is being threatened by Riff with the anti-matter laser, the tattoo on his upper left torso seems to have mysteriously washed off. It's running and illegible. Also earlier, when he's still in the pool, there's barely a smudge, but when he first gets out it's quite clear. (01:24:55)
Audio problem: During "I Can Make You A Man," when Frank slides his finger down Rocky's chest while saying "ste-he-he-he-heam," you can hear a solitary beep from out of nowhere, from when the synthesizer was hit accidentally during that part of the song and was never edited out (it is on the CD too). (00:40:32)
Continuity mistake: When Brad draws the heart on the church door in the close-up, it's a different shape in the following wide shot. (00:08:25)
Continuity mistake: At the beginning of the film, just after the wedding photo is taken we see the father of the bride run up the church steps. Seconds later, we see him running up the steps again. (00:05:40)