right now playing in my head ...
I Can't Stop Loving You by Ray Charles (God bless his soul). the song was used with full effect in Osamu Tezuka's Metropolis film. <img src="/ubbthreads/images/graemlins/up.gif" alt="" />
"I caaan't stop loooooving youuu!"
*Ziggurat starts to fall apart.* Me and my father agree, this was one of the most successful use of a song in a movie (not just anime).
What can I say? I love Metropolis! Some of The Animatrix movies were suspiciously like some scenes from Metropolis.
Nightwish - The Siren
One of the best intros I've heard in a long time.