From the "I have a dream" speech to Steve Jobs’ iPhone launch, all great presentations have a common architecture. At TEDxEast, Nancy Duarte draws lessons on how to make a powerful call-to-action.

Nancy Duarte believes that ideas are the most powerful tools people have. Her passion is to help every person learn to communicate their world-changing idea effectively.

Garr Reynolds, creator of the most popular Web site on presentation design and delivery on the net -- presentationzen.com -- shares his experience in a provocative mix of illumination, inspiration, education, and guidance that will change the way you think about making presentations with PowerPoint or Keynote.