Other mistake: At the start of Rimmer's exam, the invigilator orders the students to "turn over their papers and start". Rimmer reads one side of the paper, then turns it over to read another question. The back of the paper should have been blank as otherwise there would be no point asking the students to keep the papers face down before reading the questions. (00:15:30)
Revealing mistake: After the Cat's dance, Lister says 'we are outta here' and pulls the level, at which point the crew all fall back as if Blue Midget had rushed forwards. However, in the model shot of the ship it shows it scraping its foot on the floor before it runs forwards, meaning the crew should not have fallen back in their seats. (00:10:50)
Continuity mistake: When the Cat is holding up the haddock, going through the people who have commited suicide, the shot changes and the haddock disappeares from his hand. Also after the shot changes, the Cat is then pointing at Kryten and smiling. (00:03:25)
Timeslides - S3-E5
Continuity mistake: In the pub, Lister gets a pint incredibly quickly after they arrive and has managed to drink half of it in a single camera cut. (00:11:50)
Stasis Leak - S2-E4
Continuity mistake: In the hotel when the case moves past the Cat, the shot changes and the Cat has moved from the pink carpet to the blue carpet. (00:21:50)
Confidence and Paranoia - S1-E5
Revealing mistake: In the captain's office, the words 'Medical bay' have been painted on the wall. This was near The End of the episode and can be seen over Rimmer's shoulder while they are talking in the drive room. The set was obviously doubled with the medical bay, as the captain's office is not used in this episode. (00:23:25)
Continuity mistake: When Lister and the Cat are talking to the original Rimmer in the cinema, the new Rimmer enters and argues with the original. The original Rimmer makes hand puppets, while the new Rimmer sits at the front. When Lister does the ippy-dippy, the Rimmers have swapped places. The new Rimmer says that he was there first, without complaint from the original. (00:23:30)
Confidence and Paranoia - S1-E5
Visible crew/equipment: When the skutters try to move Lister in the Medi-bay, you can see the cable which pulls Lister's chair in the bottom right of the screen. (00:12:40)
Audio problem: During the conversation in which Holly wants to prove he has an IQ of 6000 (while Lister and the Cat are scrubbing the floor), there is a brief moment where you can see the TV Holly is on (at an angle). You can hear sound coming from him, but his lips aren't moving. (00:16:55)
Audio problem: In Rimmer's future echo he says, "You're space crazy", but in the real conversation with Lister, he actually says, "You are space crazy". (00:15:20 - 00:16:15)
Continuity mistake: When Rimmer and Lister leave their sleeping quarters, there are two pictures on the wall between the door and the window and a canister on the wall beside the beds. When they are next in the room the items are gone, and at The End of the episode they have all returned. (00:09:20 - 00:12:50)
Revealing mistake: Just after we see the first meteorite, there is a brief moment where the model shot and the crew walking into the cockpit overlap causing both images to be seen together. (00:16:55)
Continuity mistake: In the bathroom when Kryten says he does not want his corrupted files repaired, he holds out his arms. In the next shot when the guards stun him, they are by his side. (00:15:00)
Continuity mistake: At The End of the episode when Lister, Kryten, the Cat and Kochanski are dressed as the Dibleys, they walk into the corridor in a line and Kochanski stops when she bumps into the Cat. In the next shot there is a suddenly a space between them. (00:26:40)
Continuity mistake: When Lister drags Kryten through a doorway by his groinal attachment, he is using one hand. In the next shot he is using both hands. (00:12:05)
Revealing mistake: During the fight, there is a man in a 'Flash Gordon' t-shirt with the logo forwards. (00:24:45)
Continuity mistake: During the Cat's dance scene with Blue Midget, we see one shot of Blue Midget doing the air guitar move, but in the next shot, his arms are not visible at all. It changes between these two differing shots throughout the closing end of the dance routine. (00:10:10)
Answer: The cello is a large four-stringed instrument, which, when it is played, stands vertically on the floor between the player's legs (assuming they are seated). If it is to grow as large as the other instuments mentioned will, it would require a rather unseemly lack of femininity to be able to encompass it with the legs.
Rooster of Doom