Amazing street photographer Vivian Maier was only discovered recently and only after she died. She left over 100,000 photos of New York and Chicago in the 50s and 60s, mostly undeveloped. Read the amazing story here, a blog by the man who accidentally discovered her.
Spooky, wonderful work by German photographer Michael Wesely, using impossibly long exposure—like 34 months for the top one of NYC. Stefan Klenke has a nice article about it here