I remember this, too, and it made an impression on me. I still use PowerPoint (or Prezi, or whatever) but spend a lot of time making sure the deck helps me deliver my message, instead of me just narrating whatever's on the screen. Typically I try to use fewer than 10 slides per hour and no more than two or three bullets per slide.
PPT can be a great tool when used correctly. Hardly anyone does, though. At least where I work.