Sure, Dethklok counts, as long as you're not one of those asshats who thinks that they're/he's better than the bands they/he imitates and pays homage to. Seriously, I can't even count the amount of indie dweebs who have said that. Somehow the (poorly mixed) Dethklok CD became a smash hit amongst people who don't even like metal, and then they go and make comments like that without ever even having HEARD the bands within the death metal genre. Farkin' stupid. I guarantee that if somebody likes Dethklok, they'll like death metal.
The Dethalbum is all right, but man am I depressed about how boring Gene Hoglan's drumming is. That guy is a god among metal drummers, and you wouldn't think that if that album is the only one you've heard with him drumming.