I listened to the Trainspotting soundtrack the other day, and it's almost custom-designed for getting stoned. Iggy Pop's "Lust For Life" is a great song to be setting up some bong hits to, and then you get eased into some mellow Brian Eno just as the high hits and you sort of go from there - there's music for all states and moods, so just feel it. I'd recommend skipping "Atomic" - although I can't say I even like that song when I'm sober.