Opening with a noise that sounds suspiciously like someone belching into a microphone, Windowlicker opens into one of the most strange and brilliantly inspiring songs ever. It has the ability to sound all over the place, yet still stick to a tune and pattern, which is a pretty hard to do. I can't stand Formula (hence the 4 stars, otherwise it would have 5), its just unlistenable. Nannou is really fascinating. Its like a music box dancing accross a table top in the middle of the night.
I think the cover sort of defines it. Richard D James has invaded music, made it swallow a bomb and given the detonator to a monkey.