There's too much good stuff in the comments, I'll put the guest uploads in a separate post - all by the mighty Symbolkid, thanks a lot!
Howlin' Wolf's New Album, 1969
The ElectriK Mud Kats Band with Cosey on guitar backs up Wolf. The music is crazy good, but I hate the cover.
The Muhal Richard Abrams Orchestra - Blu Blu Blu, 1990
Muhal Richard Abrams - 1-OQA+19, 1976
Gerry Mulligan Quartet with Bob Brookmeyer - The Salle Pleyel Concerts, 1954
Vol.1 on rapidshare: pt.1 and pt.2 (via)
Vol.2 on megaupload