Is there more to Powerpoint than sales presentations? If you're David Byrne, there is. The musician and former student of fine art has long applied a visual inventiveness to his distinctive stage clothing, videos and album covers, movie, and photography. Now, he's taken up Powerpoint, and has just published a book and DVD of his creations, entitled Envisioning Emotional Epistemological Information. Byrne explains why he was drawn to the corporate tool. Also a conversation with Rob Forbes about "how to see" through George Nelson's eyes.