Krush is good.. actually i though DJ Honda was pretty decent, and i have a DJ Sushi LP around somewhere (too bad about him though, he was only 16 when he died).
No one mentioned Shonen knife because a lot of people dont hold them in the same regard as other japanese bands. Hell i bought "Let's knife" yesterday
Also no one mentioned PuffyAmiYumi.. but i think that might be for the best