When Janet and Brad are scuttling off to the side of the stage at the end of Wild and an Untamed Thing, she accidentally stabs his foot with her high heels, causing him to wince and stumble in incredible pain.
Riff Raff fills Dr. Scott's mug twice, once in close-up of Rocky, then again in the next wide shot. Riff also serves Brad a slice of meat twice, once in a close-up of Brad and then again in a wide shot.
When performing the floor show, the position of the backdrop and the white curtain changes. On a wide shot, the curtain and the backdrop lettering appears high above the actors. On a narrow shot, the curtain and lettering appear right above their heads.
Dr. Scott is being carried away from the castle by Brad and
Janet at the end of the movie when Magenta and Riff Raff are just about to transport the castle away. After the explosion of the castle "taking off", Brad, Janet, and Dr. Scott can be seen lying strewn across the grounds, Dr. Scott lying on the remains of his wheel chair, which he did not have just moments before.
After Frank removes the tablecloth to reveal Eddie's corpse, he stumbles backward and falls onto a chair. When the camera zooms in on the table, Frank can be seen reflected on the glass standing up. In his next shot, he is still sitting down.
The criminologist mentions that the movie takes place in November. However, in the car, Brad and Janet are listening to Richard Nixon's resignation speech, which took place in August. This was added by the filmmakers to show that Brad is a nerd who has an audio tape of the speech.