Ok, I know what youre thinking, IS this guy crazy? Probably. But I have to go with:
Aphex Twin - Selected Ambient Works Vol. 2
This one is probably for the electro heads only. Its a 2 cd box, no track names - each track is represented by a different circle with triangles inside. I think its not ment to be listend to actively if you know what I mean its just background sounds but I find it really soothing. Its molodic & almost doesnt qualify as music. Its really ambient & I mean seriously fucking ambient. When he released it the music press thought it was a joke coz Mr James usually releases nosebleed hard-as-nails techno. Maybe its not for everyone but it works for me.