I wouldn't say this is my fav episode, and certainly not my fav one-shot/filler episode, but there were some funny lines. I love the Buffy/Anya interaction: "You're not going away. Why aren't you going away?.... Oh, buck up you! You kill the best! Go you! Kill, kill."
And I guess even in Jonathan's world sparks fly between Buffy & Spike- that was hot!
But my favorite line is when Giles tells Xander, "don't speak Latin in front of the books."
And the opening credits crack me up, with Jonathan included in everything. Buffy's "Jonathan" at the end was funny, I read there is a non-spoken line in the closed captioning where she says "Just kidding".