Okay, I admit it! I am an insatiable Discovery Channel addict; as if you couldn't guess.
Over the years there have been several shows about the Antikythera Mechanism, an ancient mechanical computer of great sophistication found under the ocean in 1901. The device fascinates me.
The link above will take you to a series of photographs on CNET's News.com which depict both the mechanism and a "completed" computer simulation of what scientists think the mechanism looked like. It is beyond merely cool, in my opinion.