Comment by DaveInTucson

Brian Eno's got some great ambient stuff (although Ambient 4 is not one of my favorites).

Some I'd recommend:

* Ambient 1: Music for Airports

* Ambient 2: Plateaux of Mirror

* The Pearl

* Thursday Afternoon

* Discreet Music

If you like any of those, there's lots more to explore. I don't care for all Eno's ambient works, but I really enjoy some of it.