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)Super Grover
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)
Continuity mistake: When the color machine has been lowered and Frank has finished opening the spigots, there is a shot which shows his reflection in the monitor on the console where Riff Raff is turning the crank. In the reflection his hands are up in the air, waiting for the color machine to be lowered - which, of course, it already has. (00:35:50)
Continuity mistake: As Brad and Janet enter the ballroom at the beginning of "The Time Warp", a red carpet runs from the throne at the opposite end of the room, down the steps, and clear across the floor to the ballroom entrance. After the second verse, as Riff Raff and Magenta dance across the floor, the carpet stops short at the bottom of the steps. The full-length carpet reappears and disappears several times during this number. (00:21:30 - 00:22:15)
Continuity mistake: After Frank-N-Furter makes his initial appearance, when he bumps into Janet on the way out, her necklace chain is under her large pink dress collar. Once Frank-N-Furter leaves, her chain is actually around her neck now, over the large collar, so Riff Raff can easily pull the dress down unhindered. (00:27:00 - 00:27:50)Super Grover
Continuity mistake: Towards the end where they are all in the pool singing, Dr. Scott is saying how he can't fall into his trap and pulls up his leg and you see the stocking. A few seconds later when they cut in with a faster beat, you see his leg fall to the ground. There is not a stocking on his leg. (01:24:16)
Continuity mistake: During "Hot Patootie", before Eddie drives up onto the ramp, there is a group shot of the Transylvanians dancing. Two of them disappear from one shot to another. The black guy and the Arab can be seen kicking out during the line up but when the camera changes to the wide shot of them all they are both gone.