Hmm.
NewS - Hadashi no Cinderella (more of a girl's song, though)
NewS - Teppen (a really good anime-type song)
NewS - Cherish (a fairly slow song)
[NewS is a good group, and they have a bunch of different KINDS of music.
Neat!]
Gackt - Papa lapped a pap lopped (Love the live vid! XD)
Gackt - Luna (A scary...but freakishly cool...song)
Gackt - U+K (I listen to this when I'm in a good mood...and I watch the live vid when I'm in a bad mood and want to cheer up!!!! HA!)
Hope that helped!
Some of my fav. J-music =3