The radical filmmaking period of the 1970s is a familiar subject to most, including myself- I mean, in the same year as this documentary was released, there was also the similar Easy Riders, Raging Bulls... But I like hearing about it, even if it's familiar information.
And I like seeing old film clips from familiar films- and adding a couple of new movies to my watchlist based on clips that aren't familiar.
If you're not familiar with 70s films this is a must watch. But if you are, it's still entertaining and a good way to spend some free time.