Damn, this is so cool. I would have loved to have seen this happening. The second picture is the better one I think.
Ten thousand superballs rolling down a San Francisco hill-street
Cory Doctorow:
These photos document the release of 10,000 small superballs at the San Francisco hilltop corner of Filbert and Leavenworth. Wow.[via Boing Boing Blog]
