Dan Roam’s “The Back of the Napkin” invites its readers to give up slides altogether, and use flipcharts and blackboards instead. The central idea is visual thinking, drawing graphics as you explain them, rather than taking audiences through endless bullet points. The book is full of practical advice for doing this. A must read.
Garr Reynold’s “Presentationzen” is a plea for preparing your presentation offline. Rather than a method, it introduces a presentation philosophy, heavily influenced by Asian culture. The central idea is simplicity. While obviously influencing many of today’s speakers, the concept of presentationzen is relatively unproven for complex subjects, such as science or technology. Nevertheless, a must read.