Percy and Chauvelin both pretending to doze in Lord Grenville's dining room is pretty funny. The former is waiting for one his men to contact him; the latter for the Scarlet Pimpernel. Chauvelin decides that Sir Percy's snoring won't interrupt his plans for ambushing the Pimpernel.
Also leads into Fridge Funny—one wonders just how long it took him to realize the Pimpernel's identity. The You Have GOT to Be Kidding Me! reaction isn't shown onscreen, but it had to have been hilarious.
Percy's Refuge in Audacity method of getting rid of Chauvelin—pouring pepper into his snuffbox, then casually offering some to his archenemy. While Chauvelin is helpless, Percy simply picks up his hat, leaves some money, and strolls straight out the door.
During "Sir Percy Hits Back," Chauvelin's Oh, Crap! when he realizes that his daughter has sided with Sir Percy out of her love for a nobleman is absolutely hilarious.
The song The Scarlett Pimpernel from beginning to end with all the Shrouded in MythGossip Evolution about the pimpernel (with the local ladies swooning over him and plenty of the men putting in jealous lies about his appearance and hygiene) as Percy gets in a Sarcastic Confession or two and some bemused reactions to the claims about him (that hes a maharaja from Bombay , a bishop in disguise, rides a camel and has warts on his nose, just to name a few).