Just coming up to 20 Years since the release of Aphex Twin - Selected Ambient Works Vol II.
Which reminds me that I freaked out my 8 year old daughter by playing it loud in the room below hers after she'd gone to bed.
Little known fact. In late 1994, the Japanese anime series Macross Plus debuted. Set in a future time, in its first episode there's a moment when a rotating video ad at a bus stop promises the release of AFX's Selected Ambient Works Vol. 23 2038-2040, complete with that first ambient collection logo.
http://thequietus.com/articles/14552-aphex-twin-selected-ambient-works-volume-ii-review
And by the way. It's not ambient music to fill in the spaces behind whatever else you're doing. It should be played loud and given attention.