Riki-Oh is one of the bloodiest, most over the top horror comedy martial arts films ever made. Actually it just could be THE MOST violent movie ever made along with Peter Jackson's Braindead and Premutos: Lord of the Living Dead. This film is so unbelievably entertaining that I cannot convey its ultimate greatness with words alone. See this film.
If this scene looks familiar it was a regular fixture on The Daily Show during Craig Kilborn's time as the host.