I used to listen to a lot of Stoner Doom i.e. Electric Wizard, Goatsnake, Orange Goblin and I still do.

But I recently got into Melodic Death, and Soilwork combines the best of both worlds, while not strictly stoner they incorporate a lot of groove and classic rock type riffs that are very engaging and very fresh, definitely some fantastic guitar work, although I have to say the name is pretty crappy.

I would recommend "A Predator's Portrait", although it's the only one I have heard so far.