This from Japanese-based metaverse musician Komuso Tokugawa, who recently attended a Tokyo Second Life party, where a development team with the media/telecom giant were showing off an open source version of the SL viewer they've engineered to run with a motion-sensing accelerometer interface. There's been variations of this hack, of course, such as iD Media's Wii/treadmill interface, but this one comes with its own form of wacky:
The accelerometer control is hooked up to a giant Second Life robot holding a big glass crate. Residents get inside it, and try to stay inside, while in the real world, you shake the crate like crazy. A brilliant mixed reality video game that looks like tremendous fun. Read Komuso's blog for more details, including SLURL to the robot's crate.
Photo credit: Komuso Tokugawa from sonicviz.com.