I first came across Mickey Hart years back in the early 90s with the first iteration of Planet Drum. Listening left me in awe; the combination of global rhythms into this amazing blend of rhythm and harmony. Speaking to the core of my being, I constantly cycled that cassette. Eventually stretching and warping the poor thing.
Besides the quality of the work, I also find Mr. Hart's equal footing with the "other" percussionists to be great. Shows me he is a musician to the core of his being.
I'm not sure how long this has been up on YouTube, but it still is delightful. National Geo does fantastic work.