Here's a quick video from the Fair exhibit, as well as some other random things seen at the Fair.

The exhibit's running strong the whole fair. It goes into low power "geyser" mode in the late afternoon (once the sun gets behind the Bing Crosbie Hall building) and turns on every ten seconds for a bit. It keeps the rock wet and is often enough to keep people looking to see if it will turn on again soon. It turns on again once the sun starts hitting the panels in the morning. As far I've I know it's the only functioning solar powered thing at the whole fair.

The picture is from the solar powered stream I'm running in the backyard.