[UPDATE: My related post widget tells me that I posted this same video in March of 2012. My quick search of past posts failed me. Oh well. It's worth a repost- especially since the old post has funky code thrown in by the Posterous-to-Wordpress move).
A bit of an oldie, but certainly a goodie. Audri's enthusiasm is great, the Rube Goldberg is amazing, and the video's full of lessons on learning and failure.