Neha Narula: The future of money | TED Talk | TED.com

Another fascinating and inspiring talk about the future of the blockchain and how it will change not only currency and commerce, but possibly every aspect of our lives.  

Don Tapscott: How the blockchain is changing money and business | TED Talk | TED.com

This is a great explanation of the blockchain, which many (me included) believe is going to shape many aspects of our lives in the coming years.  It is still so young and uncharted, and yet already so significant and impactful.