Just a heads up that Kinetica is back, Feb 3rd to 6th In London. I went last year and really enjoyed it - several of the exhibits were Arduino powered. Here's a taster video I did last year:
http://www.youtube.com/watch?v=n1ITYX4TqPk
and the official website is at http://www.kinetica-artfair.com
Andrew
PS Anyone know how to mention a YouTube URL without it embedding the video? I had to resort to code...