Keynote presentation at Power to the Pixel, London Film Festival, October 2008. This presentation won't make much sense without the accompanying video, which is now at Blip.tv here: http://powertothepixel.blip.tv/file/1410667/. NTB have also put up audio files of all the talks: http://notthisbody.wordpress.com/2008/10/28/ntb-pttp/