Everybody leaves off Pluto. This eight foot tall model of the solar system is part of the Long Now project which started around the idea that people think and act in timeframes which are very short. This orrery and a clock are designed around a 10,000 year life span in order to start people thinking about the long term.
However the object itself I find to be a bit of a tech fetish item, a modern worship of metallurgy and craftsmanship that bears a definite 2nd Millenium stamp.
Details about it can be found here and if you are ever in Fort Mason along San Francisco's waterfront you can drop in and see it put into action by one of the curators.
