Ohayo (Good Morning), Keno - HunterxHunter
Rolling Star, YUI - Bleach
Life, YUI - Bleach
Again, YUI - FMA
... well, pretty much any opening by YUI (I don't even watch FMA... I just watched the OP since I love this artist so much)
Thank you, HOME MADE KAZOKU - Bleach
Dream Believer, Masaki Osamu - Prince of Tennis (...I feel like this was pretty much the only OP that didn't suck so bad for this series...)
Pokemon (1st season, both Japanese and English version)
I didn't watch it after that so iono about the others
Blue Bird, Ikimonogakari - Naruto (I think)
I like this artist too...
D-techno life, UVERworld - Bleach
UVERworld is okay. my little sister was into them for a bit.
Donten, DOES - Gintama
4th avenue cafe, L'arc-en-ciel - Rurouni Kenshin
100% Yuuki!, Hikaru Genji - Nintama Rantarou (God I loved this show as a kid...)