In my review of the first Neon Genesis Evangelion movie, I noted the oddity of the show's "wonderful—and incongruously upbeat—opening theme." It's never ceased to amaze me that such an introspective—indeed, practically despondent—series has such a peppy theme; if I got to battle world-destroying alien invaders in a giant robot, you can bet I'd have this tune blaring from the speakers while I did so.
I haven't posted a music file in a while, so here's the TV version of "Cruel Angel's Thesis," sung by seiyuu Yôko Takahashi, so y'all can see for yourselves. There's also a four-minute extended version you should be able to find without too much trouble.
Cruel Angel's Thesis (Neon Genesis Evangelion TV theme)
Yes, of course it's in Japanese...here's a lyric page with translation.
As always, this file will be removed later without notice.
*Note: I can't upload it right now, so I'm linking to a remote location for now. I'll upload it to my own server as soon as possible.