MIT’s Tangible Media is coming along nicely,
"Almost like a table of living clay, the inFORM is a surface that three-dimensionally changes shape, allowing users to not only interact with digital content in meatspace, but even hold hands with a person hundreds of miles away. And that’s only the beginning."
*The tie-in with the projection-mapping is especially good.
I’ve played with this in person, it’s fucking awesome.