Nitrozac and Snaggy are selling an old PowerBook G4 they bought from Steve Wozniak back in 2006, and as everything they produce, the eBay announcement is a reading pleasure for every Mac-fan.
You can read and bid here:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120380600418
By the way, Nitrozac and Snaggy are the the creators of the high-tech humor website GeekCulture.com, and the The Joy of Tech comic.