Douglas Irving Repetto's "foal" project has been one of my favorites for years. Not sure why it took me so long to post it here. It's a simple walking table—a piece of furniture that weirdly, animatedly, mimics the first tentative steps of a gangly animal.
[vimeo http://www.vimeo.com/8458630 w=500&h=281]
Repetto has taught people to make these creatures at workshops. Pictures below from a workshop at MOMA; you can read more about its appearance at various venues here.