http://www.youtube.com/watch?feature=player_embedded&v=sUtS52lqL5w
And article: http://blogs.scientificamerican.com/video-of-the-week/2012/10/03/the-most-amazing-lego-contraption-ever/
This is worth showing your team, discussing the failure modes that the various modules deal with – balls missed, balls coming all at once, etc. As a commenter says:
It's not useless. It's an industrial engineering exercise. The creator sure has learned a lot in the process.
--
Phil Smith III
Coach, The Capital Girls (retired)
Team 1900 (2002)
Team 2497 (2003)
Team 2355 (2004)
Team 1945 (2005)