Last week I heard the PBS interview that SRS referred to a post or two ago.
For an artist that I had always associated with a high level of drug induced stupor (but perhaps wrongly), he sounded quite lucid; engaging, funny, eminently likeable. He sang a bit in the studio with only his guitar as accompaniment and he's still in possession of an awesome, haunting voice. And while no one would confuse his chops with say, Steve Goodman's in-the-broadcast-studio licks on The Easter Tapes, he was a pretty nice sounding picker as well.