"Moonlight Densetsu". Does that count?
Jumped straight from two One Piece endings: Run!Run!Run! and BEFORE DAWN to the Inuyasha ending: Fukai Mori.
Anything that Suzuka has put out so far...
zetsubou billy by maximum the hormone; it's the second end theme for death note
Hare hare yuki by Haruhi Suzumiya
and teardrop by bowl, this song is the 3rd OP for yugioh GX in the japanese version
Shonen Knife - Banana Chips
Actually, I'm addictied to two of them, right now. Both from InuYasha as well.
Fukai Mori ~ Do As Infinity
Dearest ~ Dream (my late boyfriend's favorite InuYasha song)
Right now, it's Troublemaker by Arashi. I also have Saikou Everyday the Full Version by Fumie Akiyoshi, Feel your Breeze by v6, Dschinghis Khan & Dakishimete Dakishimete & Special Generation & Tomodachi wa Tomodachi Nanda by Berryz Koubou !
Journey Through The Decade by Gackt
"Overlap" by Kimeru.
HEART&SOUL by Mai Gankou. A good time for me to find that song, eh? And of course A Cruel Angel's Thesis by Yoko Takahashi, which I also found not so long time ago (yeah, never watched NGE).