Ministry Best Practices posted about how much they love TED, and included their version of the 10 Commandments to speaking at their event. Really helpful:

1. Thou shalt not simply trot out thy usual shtick.
2. Thou shalt dream a great dream, or show forth a wondrous new thing, or share something thou hast never shared before.
3. Thou shalt reveal thy curiosity and thy passion.
4. Thou shalt tell a story.
5. Thou shalt freely comment on the utterances of other speakers for the sake of blessed connection and exquisite controversy.
6. Thou shalt not flaunt thine ego. Be thou vulnerable. Speak of thy failure as well as thy success.
7. Thou shalt not sell from the stage: neither thy company, thy goods, thy writings, nor thy desperate need for funding; lest thou be cast aside into outer darkness.
8. Thou shalt remember all the while: laughter is good.
9. Thou shalt not read thy speech.
10. Thou shalt not steal the time of them that follow thee.