Have you seen the [Bravia advert](http://www.bravia-advert.com/) with all the bouncy balls bouncing down the street of San Francisco? They did it with computers, right? No, [they just used tens of thousands of real balls](http://flickr.com/photos/sepiatone/sets/720725/). Fired out of [mortars](http://flickr.com/photos/sepiatone/32622099/in/set-720725/).
Tags: technology, tv