Black Sabbath pinned their colours to the mast in 1971 when they released Sweet Leaf, an ode to their favourite green (hint: it wasn't broccoli). In the five decades since, stoner has burgeoned into its own distinct subgenre, heading out to the desert, the mountains of Appalachia and even Scandinavia in the quest for the ultimate toke-friendly cosmic freakout. With stoners around the world celebrating (albeit very slowly) 4/20, basically stoner Christmas, we picked out the best stoner records for you to enjoy even if you've never had a jazz fag in your life.  Happy 4/20, folks!