Favorite anime opening or ending!

My favorite Opening Theme is Duvet by Boa from Serial Experiments Lain, and my favorite ending theme is Magia by Kalafina, from Puella Magi Madoka Magica.

I'll go with Magia, since it's just so . . . Awesome sounding . . . *is unable to use fancy language to describe what I think of it*

Corpse Party Opening. Well fits the anime, with how scary it is

I'd have to go with Durarara!! opening 1.
Recently both Attack on Titan intros and Tokyo Ghoul intro caught my eye. My favorite ending is Yellow Moon from Naruto. I skip most of the endings tho..

I've already shared my favorite opening, Neon Genesis Evangelion's A Cruel Angel's Thesis. I'm not sure what my absolute favorite anime ending is, but one of my favorites is Kesenai Tsumi from Fullmetal Alchemist.

inuyasha ending 1 is romantic and sad