I listen to American, European, and Japanese music. I can't pick a favorite.

European: Rammstein, Megaherz, Stahlhammer, t.A.T.u., Queensryche.
American: Disturbed, Slipknot, Lynyrd Skynyrd, Linkin Park, NickelBack, Avenged Sevenfold, stuff like that.
Japanese: BeForU, Kokia, Maximum the Hormone, Misato Aki, Mizuki Nana, T.M. Revolution, and insturmental like Hirano Yoshihisa, Hironosuke Satou, Iwashaki Taku.