Here's Jamie Bartlett - and it's well worth you're time. He's great:

[fvplayer src="https://youtu.be/sd9vKB1NqiU"]

With the podcast version here.

And here's the legend which is Jon Matonis, talking bitcoin. Another belter:

[fvplayer src="https://youtu.be/fvnChprg2F4"]

In podcast form here.