Yura Yura Teikoku
Never heard of them but listening to them now. It is generic, little bit like Dinosaur Jr., I guess, but actually really good. I'm digging them.
I have to say, though, that Japanese pop sensation B'z is the most kickass pop-rock band in existence. They're sort of in the vein of Aerosmith, who I'm not too fond of, but they have a really good punk side to them, and they're known to play anything from blues to traditional Japanese-esque music. The guitarist, Tak Matsumoto, is phenominal.
http://youtube.com/watch?v=oe8g44IAeqk&search=b%27z
http://youtube.com/watch?v=Igta7CgaB...=b%27z%20juice