I mentioned it in another thread, but my favorite is Riki-Oh: The Story of Ricky. Exploding heads! Man in a meat grinder! Vice-Prison warden with a scissor-hook hand who keeps mints in his artificial eye! (I wonder if that particular combination of words has ever been used in a sentence before...)
Back when my cable company was still carrying IFC, I never missed a Zatoichi movie. They're all more or less the same, when you've seen enough of them, but it's still a thrill to see Ichi cut down the thugs five at a time. I don't think even Lone Wolf could kick his ass.