I came across Bitcoinfog at http://www.bitcoinfog.com/. They run a hidden service in TOR at http://fogcore5n3ov3tui.onion
They have been down since mid August and are not back up. I think they cut and ran with peoples bit coins. Which is quite a risk for sites like this. It's happened to me before as well when I was "testing the waters" by running the coins through a tumbler site.
