Good Buffy Quotes

Bonus points for anyone who can figure out what episode this belongs to.

Buffy: I'm going to give the special night everyone deserves. Even if I have to kill everyone on the face of the planet.
Xander: Yay?!

Giles: Oh for god's sake man. She's 18 and you have the emotional maturity of a blueberry scone. Just have at it and quit fluttering about!