This last weekend, I attended the annual "Rockets for Schools" group down in Sheboygan for the first time. While it really has nothing to do with Lego, I saw a few cool things there that were - I even met an AFOL. Unfortunatlly, I did not bring a camera, but I saw:
A neat mindstorms setup that had a machine that loaded and unloaded various balls and other items
A Mars rover vehicle (the offical Lego one)
And, the best part of all, a model of the cassini space proble built by an AFOL that I met - his gallery is here: http://www.brickshelf.com/cgi-bin/gallery.cgi?m=Rev-B
I'm sorry if this is in the wrong spot, but I was very happy about meeting a fellow Lego fan.