Just found this super neat (remember the days before ‘awesome’, ‘rad’ or ‘cool’) video. These guys hacked an industrial robot arm and synced it to motions of a WiiRemote.
explorers' club
explorations in dev, science, sci-fi, games, and other fun stuff!
explorers' club 
Wednesday, May 16, 2007 at 4:05 pm
I love the arm is a little “slow” to react, so they just throw the tennis balls at it.