Featuring the late Garry Winogrand. Very interesting in terms of technique, for instance he uses pre-focussed wide angle lenses and plays with the camera to divert people. In two parts:
http://www.youtube.com/watch?v=Tl4f-QFCUek&feature=related
http://www.youtube.com/watch?v=Tl4f-QFCUek&feature=related