Killer Powerpointing

Guy Kawasaki is a dynamic presenter and public speaker not to mention evangelist. He has established what he calles his 10/20/30 Rule of Powerpoint - "a PowerPoint presentation should have ten slides, last no more than twenty minutes, and contain no font smaller than thirty points."

10 Slides (or less)
20 Minutes
30 Font Size (or bigger)

Simple... and brillant!