I just attended the 21st Century Financial Summit in Melbourne and assisted to a speech by Eric Bailey (ericbaileyglobal.com/corporate-programs.php), and I was simply blown away. I'm strongly considering inviting this kind of speakers to motivate my own business and team.

But I was wondering who would you personally recommend in this domain? (preferably in North America) Who are the top speakers who offer services for businesses?

Please post their websites