Nu-metal? Well, if you consider early Sevendust and the Deftones as nu-metal, then I like some songs, though both bands are borderline, with early Sevendust being more of a hardrock band.
I like lots of rock like Chris Cornell, Soundgarden, Jeff Buckley, Failure, etc.
Can't really stand all that pretentious bullshit like Godspeed You Black Emperor or The Mars Volta.
Ambient sucks for the most part.