Arduino! It's a wonderful thing, this open source hardware, and it pops up around here quite often. You can't get much better of an arduino primer—both what it is and where it came from—than this brilliant documentary.

From Rodrigo Calvo and Raúl Alaejos, Arduino: The Documentary delivers on the promise of its straightforward title. Also: I'm a sucker for the accents. [Laughing Squid]