Just watched this four-part documentary on Willie Nelson and it has been one of the most enjoyable documentaries I've seen in a while.  I would suggest this would even be good for those who aren't particular fans of Nelson.  Watching it also makes one appreciate living in the same era as people like Nelson.  When he passes, it will be a long time before we see another like him and we need to relish people like this regardless if we are fans or not.