Some of my favourite J-Rock bands:
X Japan,
Malice Mizer,
Moi Dix Mois,
Merry,
miyavi (the older songs T.T),
Golden Bomber,
Kaya,
Seileen and Selia,
Versailles,
Psycho Le Cemu.
I haven't been following the scene for some years, so I'm not very up to date with the latest bands and I'm open to suggestions!
Other music:
Kishidan and DJ OZMA <3 -- it's very likely that I like whatever that man does, lol
I also like Ryu Ga Gotoku OSTs (though it was worth mentioning)
EBM, Aggrotech
J-Pop
J-techno, as I like dancing trapara/techpara
Other interests:
Anime
J-Drama -- I love: Kisarazu Cat's Eyes, My Boss My Hero, Yuusha Yoshihiko