If you are big fan of stoner rock then you really need to watch this documentary Such Hawks Such Hounds. The film made by John Srebalus covers the underground rock scene from 1970-2007 and features interviews discussing stoner, drone, metal and the sludge scene from various bands including Mudhoney, Dead Meadow, Sleep, Kyuss and many more.
This is available on DVD, so order one as this is a definite keeper.