Dang! Just picked up a copy of the Hot Club Sandwich "Green Room" CD...awesome stuff! Listened to a few clips off of several Harmonious Wail CDs as well; I'll definitely be buying some of their stuff soon. But right up there with the best of 'em is the recording that Oliver Waitz (guitar) recorded with Jesper Rubner-Peterson (mandolin) titled "A Jazzy Note". I listened to a 30 second clip of "After You've Gone" on Itunes, and promptly bought the album.
I'm going broke trying to catch up with all of the fantastic mando-centric gypsy jazz music that's out there.