Edward Tufte's article "PowerPoint Does Rocket Science--and Better Techniques for Technical Reports"(http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=

Edward Tufte's article "PowerPoint Does Rocket Science--and Better Techniques for Technical Reports"(http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=0001yB&topic_id=1 http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=0...) has a wealthy of information about why and how to avoid Powerpoint.