A documentary about grindcore. Read the full article on AICN Hey, geeks. Big Eyes here. We have a guest review today. Say hello to our favorite metalhead: Dead Guy! Hello there, headbangers. Dead Guy here with a new review just in time for Summer’s end. Today I am covering the rockumentary Slave to the Grind – A Film About Grindcore by director Doug Brown. As a music fanatic and devoted fan of the genre, I may be slightly biased.