Good Ballroom style presentations - Presentation Zen

A couple of days ago I mentioned the important distinction between Conference Room and Ballroom style presentations. This blog is mostly about Conference Room style presentations - presentations of complex information to smaller audiences, with the purpose of getting the audience to act on your information. For Ballroom style presentations (for sharing information with larger audiences), in my workshops I have been recommending Garr Reynolds' blog Presentation Zen, and now his excellent new book.