I sat down to rewatch and episode or two tonight, and picked Leela's Homeworld.
To my immense surprise, I realised that the only parts of the episode I had ever seen were the opening title ("When you see the robot, drink!" ) and the last couple of minutes. Either that or I'd forgotten it all.
Either way, having an episode I had never seen before was a great bonus
Holly: Would you mind erasing some of my memory?
Lister: What for?
Holly: Well, if you erase all the Agatha Christie novels from my memory bank, I could read 'em all again tonight.
Lister: How do I do it?
Holly: Just type in "HOLOMEM PASSWORD OVERRIDE DELETE NOVELS CHRISTIE, AGATHA", then press erase.
Lister: I've done it.
Holly: Done what?
Lister: Erased Agatha Christie.
Holly: Who's she then?
(...)