In the week I've had these PowerStrider jumping stilts, not a single person I talked to knew exactly what they were. Even I wasn't sure, as I was wearing them. But after a while, things started to make sense.
(http://cache.gawkerassets.com/assets/images/4/2010/11/500x_stiltsmid.jpg)
Lightning Review: My New Mechanical Legs (http://gizmodo.com/5692743/lightning-review-my-new-mechanical-legs)