Slipknot--Iowan, well, there's no way to describe this 9-piece beast!
Stone Sour--Iowan Rock
Linkin Park--LA Nu Metal/Rapping Metal
Motley Crue--LA, um, you can't really describe Motley!
Bon Jovi--New Jersey Rock
Nightwish--Finnish Symphonic Heavy Metal (it sounds weird but is extremely awesome!) <---- would definitely recommend checking out!
HIM--Finnish "Love metal"/"Goth metal"