My favourite line from pretty much anything, ever:
"Over the years, I've come to regard you all as people... I... met."
Holoship, you beat me to it
Nodnol? Hang on, wait a minute! Nodnol! Nod...Nol. It's in Bulgaria, isn't it! ... Geography was my number one subject at school. Nodnol, Bulgaria, rich in animal produce and mineral wealth, just south of Bosnia.
Cat: Hey hey hey, I've got you now, buddy! J, O, Z, X, Y, Q, K!
Lister: That's not a word.
Cat: It's a Cat word.
Lister: Jozxyqk?
Cat: That's not how you pronounce it!
Lister: What does it mean?
Cat: It's the sound you make when you get your sexual organs trapped in something.
Lister: Is it in the dictionary?
Cat: Well it could be, if you're reading in the nude and close the book too quick. Jozxyqk!!!