Pearl Jam is my favorite. Just thought I would recomend a few songs by them that sound absolutely incredible when you're stoned... Crown of Thorns (This is my fav... it's an old Mother Love Bone song but Pearl Jam does it better in my opinion. Download the live christmas single version. The two guitar solos can only be described as beautiful. They make me laugh everytime I hear them cause they are so overwhelming) Black (Stone and Mike's guitars sound like they are dancing with eachother) Once Release (Sounds like the guitars are dancing again) Dissident State of Love and Trust Off He Goes In My Tree Those are just a handful... there are soooo many I never get sick of them.
Tell you what, listen to Crown Of Thorns by Cryptopsy. Though, you said about good music for when you're stoned, which Cryptopsy might not be quite laid back enough for! I don't think you can beat some Black Sab if that's what you're lookin' for.