All of the ones I've tried so far are working except for "cthroughdock". The program goes through the motions, asks for a password, but reverts back to the original Leopard dock.
EDIT: Correction, "cthroughdock" is working, but just not as advertised in the pic on the site. The blue lights are much brighter, but the shelf is milky and very visible, just like the standard dock. I'd love to see the invisible, but reflective shelf working.