Brother is fairly good, but most of his other stuff is better... especially Sonatine, Hana-Bi and Zatôichi.
Far-L: Battle Royale isn't directed by Takeshi Kitano, he just acts in it.
For really great Japanese cinema, check out stuff by Kenji Mizoguchi, Yasujiro Ozu and (ofcourse) Akira Kurosawa. Old, but still really, really good
