Not really, the whole rap-metal fusion has been going on since the 80's. Anthrax recorded a track with Public Enemy; on the album "The Mind is a Terrible Thing to Taste" Ministry recorded a track called "Test" (don't know who raps in it, but it's rap-metal); Faith no More has been doing it since the early 80's; and I'm sure there are dozens more.LoopyDood said:Slipknot is nu metal.
Despite the name, nu metal technically isn't considered a subgenre of metal. Glam rock, once again despite the name, is considered a subgenre of metal.
Sorry folks. The non metal classification came from nu metal's roots. It's a blend of grunge and rap, both of which aren't metal. Grunge is essentially alternate rock with "heavy" downtuned guitars. Nu metal is grunge with rap on top.