SLIPKNOTThese self proclaimed "freaks" from Des Moines draw upon elements of thrash, hip hop, and shock rock with brutal results. The music world may not have seen such a marriage of aggression and technical precision since the rise of thrash pioneers Slayer. At times Slipknot steps into the musical guises of heavy purveyors such as Korn, Powerman 5000, and Sepultura. However, even with the derivative nature of metal, this eight member ensemble manages to be