Decades before Instagram, Facebook, Tumblr, Grindr, and MySpace, there was Vivian Maier. Working as a nanny in Chicago during the '50s and '60s, she captured her world with a profoundly sensitive eye, focusing primarily on street portraits, but also mastering the art of the selfie in a way we're guessing Stalker Sarah never will. Indeed, in stark contrast to today's insta-share society, Ms. Maier never showed her work to anyone. An-nee-one. Not her family, not her friends, no one. It wasn't until 2007 that a box of unlabeled negatives were bought at auction that one of the greatest photographers of the 20th century was found. A full-length documentary is slated for later this year. Here's the trailer ...