Hmmph anybody here remembers escaflowne? wolf rain?

i luv that singer Maaya sakamoto  + yoko kanno collaboration..

Maaya's voice is really sweet and yoko is really good in arranging,(she did GITS, cowboy bebop etc) 
especially their songs like Yakusoku wa iranai, yubiwa, Platinum

yea I use gendou to dl opening and endings, but for ost I use nipponsei or box.

Rock hmm.. fma has a few rock opening, tobira no mukou he (yellow generation), rewrite (asian kung fu generation), gundam seed and seed destiny have heaps of those, naruto has some (haruka kanata by asian kung fu generation),  shakugan no shana's first opening hishoku no sora by kawada mami is damn good (not sure if it's really rock tho), and as mentioned suzumiya haruhi's op, ed and the concert songs (god knows) are pretty good, especially god knows, tales of abyss's karma (altho not anime, the japanese opening), musouka by suara (utawarerumono), hemisphere by sakamoto maaya (rahxephon), a few rock ones that I can remember for now.

Here are some I think is worth trying

Minami Kuribayashi (often heard in Mai Hime/Otome series)
Kotoko (a few anime, but mostly in j-game )
Changin' My Life (Full Moon wo Sagashite , lots of nice songs if u are into love songs)

Others are YUI, Yui Horie, Nami Tamaki, TM Revolution,ALI project, JAM project, Aya Hirano (ops almost forgot her )