David Rose has a fabulous must-see TED Talk that explains the anatomy of a 10 minute VC pitch and how to win your next meeting with the VC.
Nancy Duarte has an interesting TED talk that theorizes that great talks start with the "what is" state, and paints a picture of the "what will be" state, and holds the audience's interest by going back and forth between those two states. "The secret structure of great talks".
Simon Sinek has a great TED talk that is more focused on how leaders communicate, but the core tenets of "Start with Why" very much still holds. "How great leaders inspire action".