Neon Pattern Drum by Jon Hopkins (listen in stereo!).
Have listened to it loads and found it to be unremarkable... Annoying, even. BUT the other day it came on and it synched with my psyche like a tuning fork! An epiphany! A delicate, ethereal and powerful experience! I played it again just now and it was average again. Now it's on again... It's ace!
The gift that keeps on giving; either that or some kind of temporary cognitive glitch.
Have a listen and report back!