Since we're discussing Stoner style music, may I heartily suggest Monster Magnet's forgotten masterpiece "Monolithic, Baby!"
Nobody ever mentions this record, but in my opinion, it's the best thing Dave Wyndorf and crew have ever done. The first 6 songs just pin your ass to the seat, with lyrics that are both funny, prophetic, and intelligent.
Copies are hard to come by, I got a vinyl pressing that cost a pile, but it came from Germany. Should you see it in a bargain bin like I did a few weeks back (DVD promo copy, at that!) for a buck, snag it.
Yes, I already had the vinyl copy and an old burnt copy as well. Can't have too many copies of a great album.