Mad Detective, whoooa.
Still not seriously though, the Election films are probably the best place to start if you're interested, though Mad Detective (which is fun as all hell) isn't too shabby a place either. If you like Kitano's yakuza flicks you should love To, who admittedly is much more serious. I haven't seen enough of his stuff to say more than that, but if you like fun ultra violence you should be chill.
