After years and year trying to get Keith to the event it finally happened in April 2012. He gave a very nice talk which was about:
Get ready for some crazy math, beautiful graphics, and mind twisting concepts. We'll take a tour through the land of fractals, dynamical systems, chaos, strange attractors, and much more. Even if you don't understand what's going on, bring your headphones and some cool music and enjoy the show.
More info and updates about beyond tellerrand: