I always loved to get high to Godflesh's STREETCLEANER

I don't smoke, but I would imagine Boredoms would do the trick.

yeah sea of tombs.

Sleep
Electric Wizard
Dead Meadow
Earth
Goatsnake
Colour Haze (quite an unknown band but they're worshipped by stonerrock.com and rightly too)
Om
Orange Goblin
Totimoshi

Oh! I almost forgot Fatso Jetson who are one of the "seminal stoner bands"

All those bands you named are amazing. Colour Haze are horribly average I must admit though...

Melvins, muthafucka

I like Colour Haze, got a bit of krautrock about them as well as the driving riffs. Oh yeah, Kling Klang is a band that sort of does kraut-y stoner rock only mostly concentrating on synths rather than guitar, not all that special but different

I know Orange Goblin, a friend of mine is a huge fan.

Down

I've never smoked in my life, but I'm always ready for some Earth, Boris, Black Sabbath and (I can't believe no one's mentioned) Neurosis.

NNNNnnEEEEeEeEEUuuuUuUUuUUURrrRooooOoOoOoOoSSSSSSS IIIIIIIISSsSSsSssSSSSSsssss

Ha, that music is more for when I OD on opiates.

Fursaxa + Opiates = :)