I like the way Buffy whistled "Going Through the Motions," as she left the child welfare office in Gone.
You just completely blew my mind. I never noticed that... *explosion noises*
I always enjoy "That Kind of Love" by Alison Krauss at the end of Entropy
"Out of This World" by Bush in Dead Things
2. The lack of music in The Body. That silence is so so so so so so powerful.
There's a lot of awesome music choices that I can't remember, but those are my favorites.