Henri Cartier Bresson - Just Plain Love (Documentary)
Henri Cartier-Bresson was a French photographer who is widely considered to be godfather of photojournalism. As an early adopter of 35 mm film format he was he became a master of candid street photography. In fact he was the catalyst for almost the whole street photography genre. Street photography has become wildly popular these days and you can thank Bresson for that.
His wikipedia page has more depth than I could possible outline here.