I'm curious what is good nu metal? Limp Bizkit is the only thing that comes to mind and it doesnt go uphill at any point. Deftones are not in that genre BTW
Korn, LP, Bizkit, Deftones (White Pony days), Adema, POD are all nu-metal bands. Any band that has a little rapping, some screaming/yelling, a few samples or turntables and just a basic power chord guitar riff are considered nu-metal.