Burial - archangel. For those who don't know, London producer, made a load of epic EPs and powerful full length release in Untrue.
Actress - N.E.W. Another English producer who cam eout with a really chilled/ experimental record a couple of years ago called R.I.P. Had a recent album out called ghettoville which is apparently pretty quality but i haven't listened to it.
J Dilla - Waves. If you haven't heard J dilla's donuts album it's a really good place to start if you want to get into some instrumental hip hop. pretty legendary producer.
DJ Shadow - What does you soul look like part 1. My favourite track on the Endtroducing album by DJ Shadow. Fantastic album made entirely of samples (i think).