Slipknot hook up with superproducer Rick Rubin and cement their rep as the scariest and smartest band of the Ozzfest generation. Vol. 3: (The Subliminal Verses) is their most extreme CD to date -- bouncing between over-powering speed-metal and haunting acoustic rock, it comes across as a deranged hippie update of another Rubin masterpiece, Slayer's ''Reign in Blood.'' Head-bangers, take note: The children of the corn have risen again.

