Visible crew/equipment: A wire/string pulling along the baby Skutters behind the parent Skutter is visible in the episode. (00:25:35)
Visible crew/equipment: When Lister downs his pint of wine, the shadow of a boom mic can be seen on the top left of the screen. (00:20:00 - 00:21:55)
Visible crew/equipment: When the crew are in their sleeping quarters, and Rimmer is talking to the others, a blue boom mic can be seen hovering over his head (you can see this if you watch the dvd on your pc, as some tv's can cut off the edge of the picture) (00:03:10)
Visible crew/equipment: When Rimmer and his seven kids get out of the car, three crew members and a white production truck are visible in the reflection. (00:25:15)
Visible crew/equipment: When Rimmer is getting in the car on the beach, you can see the cameraman's reflection on the side of it. (00:18:25)
Visible crew/equipment: When the Cat licks Better Than Life's host, there is a shadow of a boom mic at the top of the screen on the wall. (00:19:35)
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