An interesting documentary recently aired on the BBC iPlayer about a rather extra ordinary photographer, Vivian Maier who was a very unassuming and introverted character that took some incredible photographs, which were never shown to anyone let alone published and only came to light after her death when her possessions were auctioned. Here is the documentary that has been uploaded to Youtube by a third party, so I don't expect it to stay up for long, and it is also incomplete by ten minutes.
and here is the iPlayer link if you can access it or use a proxy.
BBC iPlayer - imagine...: Summer 2013: Vivian Maier: Who Took Nanny's Pictures?
well worth watching, for the amazing photography if not for the rather bizarre and somewhat depressing story that goes with it.