For some reason the way Basil's housekeeper reacts to him shooting the pillows always has me in stitches.
Housekeeper: My good pillows!
"It will be most dangerous." *Accidentally sits on violin*
"It was my fond hope to stay and witness your final scene, but you were fifteen minutes late.."
Personally, one of my FAVORITE parts is when Basil is gearing Toby up for searching out Fidget. The whole time Toby is growling and looking angry. Then THIS happened:
Basil: Low brow, close set eyes, broken wing-
Toby: *once the last one is mentioned, he looks at Basil with a look of clear confusion*
Basil: Oh, he's a peg-legged bat with a broken wing.
In an instant, he's back to growling angrily. I ALWAYS laugh at that part!
"I love it when I'm nasty."
Even Felicia gets one, when Ratigan orders her to spit Fidget out. The grumpy "You're no fun at all." expression right before she does so is pretty priceless, as is the rather moth-eaten state that Fidget comes out in.
"Item 96: A heavy tax shall be levied against all parasites and spongers. Such as the elderly. The infirm! And especially (hee, hee) little children."