I’m a big fan of Richard Feynman (probably the worlds foremost theoretical physicist / part time bongo player of the 21st century), though in saying that I’ve only ever read books, and only just recently stumbled upon his videos.  

The following 2 are from a set of 12 which I stumbled upon, and which I thought were not only very insightful, but also gave another dimension and a voice to the man who I’ve only ever read and pictured in my mind.  

If you’d like to see more, they’re available here.