Yes!!! Machine Girl, Oneechanbara/Chanbara Beauty and Tokyo Gore Police are where it's at!
Oh, and you do need to pick up a copy of Battle Royale, but I heard the sequel is shitty.

Speaking of Japanese films, I just watched 'Samurai Commando Mission 1549'...it's about the Japanese military discovering time travel, only when they go back in time with their tanks and helicopters, they can't use live ammo in case they kill someone and it fucks up the future timeline. Ergo, they keep getting speared, slashed and shafted by roving armies of Samurai warriors.