David Tipper's Forward Escape is some of the best music I've heard in the last 10 years, and doubles as great programming music too: http://open.spotify.com/album/6iXjPAUqAY5c3cVe1lNHut

The Crypt of the Necrodancer soundtrack is really great: https://www.youtube.com/watch?v=UrS1RyuoG0I

Instrumental prog is pretty good: Liquid Tension Experiment, Joe Satriani, Scale the Summit...