You missed the best one. Buffy telling Giles how horrible it's been since he went back to England, ending with "Plus I've been sleeping with Spike." Dead silence...and then Giles loses it.
A true fan of the show knows that this is only the tip of the iceberg when it comes to comedy in this show. I mean there is not even a single clip from the episode where Xander is running around with the dead guys while Buffy and gang are fighting the hellmouth in the library. Now THAT is pure comedy gold!
Buffy slaps Spike hard in th face. Buffy to Spike: "What are you doing here? Five words or less." Spike responds while counting the words with fingers: "Out. For. A. Walk ..... Bitch."
-Cordelia Chase 1999