Harry Belafonte is really an interesting listen while smokin' the grass. You'd all probably know him best for his song "Banana Boat Song", heard in Tim Burton's BeatleJuice, you all know the line, "Day oh..."

Mahuvishnu Orchestra gets my head spinning, imagine Hendrix-esque playing, but a cleaner style, over a jazz/fusion groove.

Godspeed You! Black Emperor is always great if you're in a quite enviroment.

Anything by Tim Kasher or Conor Oberst is always good for those time when you just want to concern yourself with humanity.