Pretty awesome thing! Also, it's nice to see a link on the HN frontpage to a project of a Swiss university (or two, since the INI is part of the ETHZ and UZH :)
Don't miss the silicon retina cameras by Tobi Delbruck, used for the pencil balancer:<p><a href="http://siliconretina.ini.uzh.ch" rel="nofollow">http://siliconretina.ini.uzh.ch</a>