Favorite Anime Music

If any of you have seen Clannad, you will know why this song is so powerful. Never before have I been emotionally gripped by a single song, I tear up while listening to it sometimes ;_;
But they're manly tears!

No thread on anime music would be complete without mentioning "Lilium" from Elfen Lied. This is definitely my favorite OP of any show I've seen and probably one of the most famous, but sadly I couldn't upload the actual opening (I'm sure you know why).

There is no Umineko anime.
Now that that's out of the way, I introduce Umineko no Naku Koro ni (When the Seagulls Cry), a murder mystery visual novel series. Whether or not you like crime stories, one of the things that is almost universally respected by its readers is the music. Oh god.
I would go as far as to say it surpasses Final Fantasy music at some points. It has multiple composers, and a wide range of music from just plain kickass (Dread of the Grave) to downright horrifying (Mirage Coordinator, ridicule, system0). Definitely one of the high points of the series.