Hokuto no Ken in Gaki no tsukai

Does anybody know all the references made to hokuto no ken (fist of the north star) in gaki no tsukai. The ones i know of are:hotel batsu game
[url:nql8dbnd]http://www.youtube.com/watch?v=Fi373M31BgE[/url:nql8dbnd]
some old skit on youtube
[url:nql8dbnd]http://www.youtube.com/watch?v=U5J-wmz1HX0&feature=relatedn[/url:nql8dbnd]
(dont know source)
also im pretty sure they talked about hokuto no ken in some episode but i cant remember which it was.

If anyone knows please tell me :D

Thanks.

I don’t know either but the song is awesome. U wa shock!!!