Lewton manages to be a Deadpan Snarker to Vimes, which is an incredible accomplishment in and of itself.
The ending, where Lewton banishes Nylonathotep back to the Dungeon Dimensions by crashing into him with a primitive flying machine inscribed with magic sigils.
Malaclypse
Malaclypse sounds like a ranting madman but he's actually got the majority of how the Discworld works down pat along with numerous correct things about the plot inbetween his other ramblings.
