Just heard Diamond (link to mp3) by Bootcut ("The World's Greatest Hammond and Drums Duo") on the radio this afternoon, and thankfully they're progressive enough to have quite a handful of free MP3s available on their site. They are definitely in the general style of Medeski, Martin Wood or the Benevento/Russo Duo, but seem slightly more traditional (ie, less masturbatory) in their arrangements.

Check'em out.