Doc had a long and storied career, and was considered the Father of modern flatpick guitar among his many lifetime accomplishments.
Despite being blind from birth, he made a great life for himself, looked (there you go) at things with a great sense of humor, and was still vigorously performing until just a couple of years ago.
One of my favorite collections of Doc's tunes was a Rockabilly album, the cover of which displayed a picture of him sitting behind the wheel of a Cadillac.
He was also a great finger picking stylist as can be evidenced by this rendition of "Deep River Blues"...http://www.youtube.com/watch?v=6VAbrnjdtYw in his younger days.
Thanks for many happy moments Doc!