Antikythera Mechanism - Maybe the first computer?

I recently listened to a podcast on the Antikythera Mechanism, an ancient device that allowed the Greeks to keep track of several calendars, eclipse predictions, and dates.  It was a machine made thousands of years ago.

This blog post does a really great job talking about it.

Here is the official site.
Here is a link to the awesome podcast!  Stuff you Missed in History Class (highly recommend listening to this all the time)
And of course, here is a crazy conspiracy video