I'm a HUGE Tom Waits fan. I believe I own every single full CD he has released - excpet for the latest one.
Orphans was just released and it's a 3 disc set containing 54 songs that have not been on his core releases. (Some have been on film soundtracks, compilations or other releases.
NPR has a wonderful interview with this "national treasure" and you can listen to it
here.