This is such a great talk about procrastination, by blogger Tim Urban. It's lighthearted and fun, but it definitely has a deeper and more philosophical message: Make time to do the things you should be doing. I do like the idea of assigning deadlines to everything, which i always say I am going to do, but never get around to doing.
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.
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.