A couple of months ago when I was meeting someone who's flight was more than a little delayed I wound up in a music store and impulse bought Out From Out Where by Amon Tobin. I absolutely love it and everyone I've played it for has really liked it. Lots of complex rhythms all perfectly put together. It's stuff that's interesting to listen to on it's own and still perfect for putting on in the background and while you're coding for hours and hours.