Last night, I made a casting of my pointing hand for Blame using a kit from Casting Keepsakes. It wasn't too tough to do, but you definately want to read the instructions fully, and use disposable bowls for mixing, because you certainly won't want to use them for anything afterwards. Unfortunately, I go to New York tonight, so I can't see how it came out until Saturday night.
Check out the Windows Washing Machine!
On my last trip to New York City, I saw work by Mark Napier at Bitforms (my favorite gallery). It allowed the viewer to manipulate a deformable wireframe model of the Empire State Building. It was a pretty fun interactive work!