http://www.youtube.com/watch?v=FUa7oBsSDk8
The Writer is a 240-year-old automaton in the form of a boy; created by a Swiss clockmaker, he has about 6,000 parts and is programmable. By loading stacks of metal cards, the Writer could be coaxed into writing different letters with a pen that it dipped into an inkwell; the cards also specified the pressure of the pen. The BBC Four documentary Mechanical Marvels: Clockwork Dreams produced this beautiful video of the Writer in motion, narrated by Simon Schaffer.
(via Colossal)