Gunmen of the Apocalypse - S6-E3
Continuity mistake: When Jimmy does his trick with the whip, it knocks Kryten's hat to the floor. In the next shot it is lying on the bar. (00:20:00)
Gunmen of the Apocalypse - S6-E3
Continuity mistake: When Lister leaves the saloon, his gloves appear on his hands between shots as he goes outside. (00:21:45)
Gunmen of the Apocalypse - S6-E3
Continuity mistake: When the Cat realises he has lost his special skills, Lister is looking straight forwards. In the next shot he is looking down at the ground. (00:24:50)
Gunmen of the Apocalypse - S6-E3
Continuity mistake: The Cat brings down the town sign by shooting the right hand side of it. Seconds later, when they pick Kryten up, the sign is hanging in front of the Livery building, which would only have been possible if he'd shot the left hand side.
Emohawk - Polymorph II - S6-E4
Continuity mistake: Just before the damage report machine explodes, the room is full of smoke. As it explodes, all the smoke is gone. (00:07:40)
Emohawk - Polymorph II - S6-E4
Continuity mistake: When Lister gives the Gelf the cigar, he looks over his shoulder at Kryten. In the next shot, he looks over his shoulder again. (00:11:50)
Emohawk - Polymorph II - S6-E4
Continuity mistake: The Cat's earrings disappear when the emohawk attacks him. (00:20:00)
Emohawk - Polymorph II - S6-E4
Continuity mistake: At The End of the episode when Lister hands Duane the cannister, the shot changes and Lister is facing the opposite direction. (00:27:05)
Rimmerworld - S6-E5
Continuity mistake: During the hold-up scene with the Simulant, in the close-up of her speaking, her face is in darkness. The camera cuts away to Rimmer running for the escape pod, and then back to the Simulant, who is now well lit by a pair of overhead lights. (00:12:10)
Rimmerworld - S6-E5
Continuity mistake: When Kryten, the Cat and Lister teleport when the ship is disintergrating, Lister's locks are over his right shoulder. When they arrive, his locks are behind his back. (00:12:40)
Rimmerworld - S6-E5
Continuity mistake: When the crew walk through the woods, the first shot shows Lister, Kryten and the Cat walking with space between them. In the next shot they are walking shoulder to shoulder. (00:20:45)
Rimmerworld - S6-E5
Continuity mistake: At The End of the episode, when Lister says, 'I'm saying nothing man, don't want to spoil the surprise,' his hood and locks are arranged completely different than all other shots in the scene. (00:27:20)
Out Of Time - S6-E6
Continuity mistake: When Lister and the Cat wake up from stasis, Lister walks over to the computer and his locks are over his right shoulder. In the next shot they have disappeared. (00:12:50)
Out Of Time - S6-E6
Continuity mistake: When the crew fire at their future selves, Lister says 'locking on, firing'. His locks are behind his back but in the next shot they are in front of his left shoulder. (00:26:10)
Out Of Time - S6-E6
Continuity mistake: When Lister gets killed, his locks are behind his back. In the shot before, they are over his left shoulder. (00:26:20)
Out Of Time - S6-E6
Continuity mistake: When Rimmer picks up the bazookoid at The End of the episode and runs into the engine room, the gun is pointing up. In the next shot from inside the engine room, it is pointing down. (00:27:10)
Continuity mistake: When Lister picks up the camera at the start of the episode, he stands up and turns around. In the next shot, from the view point of the camera in his hand, the shot is still rotating as if he had just picked the camera up. (00:00:15)
Continuity mistake: Lister screws in Kryten's replacement head (the one without the 'guilt chip') in exactly the SAME direction that he unscrewed the original head (to be exact - clockwise) (00:09:50)
Continuity mistake: When Lister unscrews Kryten's head, the plastic bag on the table moves between shots. (00:11:30)
Continuity mistake: Just after Kryten says 'you bet your ass' he is holding onto his groinal attachment over his shoulder. In the next shot, his arm is lowered. (00:12:00)
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