Hmm...let's see:
Shiki na Uta, by MINMI - Main Ending for Samurai Champloo
San Fransico, by Midcronica - Last Ending for Samurai Champloo
Re:member, by FLOW - 8th (?) Opening for Naruto (though I don't like the anime)
Namikaze Satellite, by Snowkel - 7th (?) Opening for Naruto
Any songs from Gundam Seed & Destiny, especially Wings of Worlds
Solar Wind, by Snowkel - Some song in Kiba
Lot's of others
