I have been a huge fan of the musical "Hair", starring the sexy Treat Williams, John Savage and Beverly D'Angelo..
I think this movie had such an awesome soundtrack, and really focused on friendships also during this "hippy" time, of the late 60's.. I recommend this movie to anyone who is a Treat Williams fan (all these actors did their own singing), and although I know I heard it's alot different then what the broadway version was, I thought this was a great movie in the 70's with a powerful ending..