Who hasn't spoken at TED who should have?
There are five or six thinkers I know of who I believe would be perfect for TED, but none of them have spoken. Bill Easterly, for example, would be a great fit for TED and has never been on their stage. Paul Polak has spoken at a TEDx but not TED or TEDGlobal; same with Henry Jenkins.
Who do you think belongs on the big stage who has never been there? And why?