I was checking out one of Guy Kawasaki's older posts about creating slide decks for presentations. This is an outstanding short tutorial from someone who has had to sit through a lot of PowerPoint presentations - must-reading for anyone who has to create slide decks! Within that post, Guy refers the reader to another (useful and interesting) blog on presentation skills called Presentation Zen by Garr Reynolds. Guy uses a presentation by Lawrence Lessig as an example of a very unusual use of slides. A video of this can be found here.
Beyond the very clever use of the slides, this is an interesting 30-minute talk on whether Google's Book Search project constitutes "fair use". Since I made reference to this issue in a post the other day, I thought I'd point folks to this resource. Lessig presents the issue very clearly, and it's worth sitting through not only because it's both entertaining and informative, but Lessig makes some important points in his conclusion w/regard to how the use of IP law by some companies (what he terms "IP-extremism") is dividing, not encouraging markets, and is having a stifling effect on innovation.