"There's a lot of Sabbath worship present on Grimmest Hits, but that's not a knock on the band. Since the release of the first six Black Sabbath albums, but given that Father Iommi seems to have retired, who better than the guy who leads Zakk Sabbath, the guy who plays those riffs in Ozzy Osbourne's band, to keep that flame ignited? If you're after riffs you can milk for days, then Grimmest Hits is a Wisconsin purebred prize dairy cow".