I ran into this article and felt it worth sharing: Physicists, Generals And CEOs Agree: Ditch The PowerPoint http://www.npr.org/blogs/alltechconsidered/2014/03/16/288796805/physicists-generals-and-ceos-agree-ditch-the-powerpointActually, the article is not all one sided -- it does also discuss some times when they feel that PowerPoint *is* useful.
Tony Hansen