Dragon ball Z, Kageyama Hironobu - We gotta power
Blue exorcist op 2, Rookiez is Punk'd -In my world
Death Note, Nightmare - The world
FMA brotherhood, Yui - Again
Naruto, Flow - Re:member
GTO, L'Arc~en~Ciel - Driver High
GTO Ending 2, Miwako Okuda - Shizuku
Kekkaishi, Uura Saeka - Ayakashi Night
Katekyoushi Hitman Reborn/Reborn, Cherryblossom - Dive to world
Hunter X Hunter, Keno - Ohayou
One piece, The rootless - One Day
No Game No Life, Konomi Suzuki - This Game
BTOOOM!, Nano - No pain No game
Soul Eater, Tommy Heavenly6 - Paper moon
Black lagoon, Mell - Red Fraction
Mushibugyo op 2, FREE Da'M - Denshin/Unchained
Eyeshield 21, back-on - Blaze Line
Deadman Wonderland, DWB feat Fade - One reason
Well, personnal taste. There some I read that I liked but they are not quite well know or not appreciated like Kekkaishi for exemple or even 666 Satan that get poorly accused of plagiat due to his author being the twin brother of the author of naruto. They did them poorly without having fact....
The funny thing about Hitman, and why I mentioned it separately, is that everyone around me liked it a lot. Naruto and for some weird reason Hitman were the most popular. No one even heard of One Piece while Bleach wasn't popular.