'Graveyard' decks, neh? Well, there are options fitting that name that aren't ressurection decks, too! For example, a deck designed by a friend of mine, who goes by 'Duel' on these boards, is meant to use Worry Beads to drop a goodly portion of its library into the graveyard, then Yawgmoth's Will the whole thing up again, and win with whatever it pulls out.
Basically, any deck that utilizes the grave as a resource as well as everything on the playing field can be called 'Graveyard.' That includes, but is certainly not limited to, Living Death/Survival of the Fittest decks, Sliving Death, Recurring Nightmare, Fluctuators/Songs of the Damned/Drain Life, etc...
"I am all that is, and shall be- No, wait, that's the other dead guy."