The New York Times weighs in with a good article on the plague of PowerPoint.
Even better: the linked essays within, including one written by an officer at our local military base.
What’s missing – a sense of whimsy, an interest in hacking PP, a la David Byrne. (Though one of the linked essays cites a *great* example of effective PP, using stick figures.) Still, if you must use PP, you can start out from here.