the bbc 4 series on californian folk and country rock and singer songwriters from the late 60's to the 70s is much more successful, and astonishingly all the interviewiees, david crosby, mike davis the sociologist, david geffen, the eagles etc, all seem to be knowledgable, honest and cool people, i particulary loathe those kinda confessional singer songwriters that emerged after joni michell though, horrible stuff.
I guess if you hone into something and get to record it well you can create something worthwhile, david crosby seemed to be the dude back then, the best weed, a hot tub full of ladies, outspoken views.