"Thank you for setting a good example in your use of PowerPoint.  I found your presentation to be effective, interesting, and not at all distracting.  You used PP to underline your points, illustrate your ideas, and connect the dots (for those who needed it) between your arguments.  I appreciate the honesty and clarity with which you used PowerPoint to present your ideas to a pretty tough crowd!”

“Thank you for your energetic presentation. It left me wanting to know more.” 

“You present your ideas and info energetically and make it pertinent to what is going on in our business.”