[Antonioni] gave to three elderly Muslims the pictures he had taken of them. The eldest one as soon as he took a glance at the photos, immediately returned them with these words: "What is it good for, to stop the time?" Andrei Tarkovsky's Polaroids
MetaFilter's own dirtdirt has been taking a polaroid photograph every day since July 14th, 2002. That's 2114 images as of today. He has other cool sets on his flickr page, my favorite being his pictures of school lunches.
Some vintage photographs of ladies trying out for dancing jobs at a South California club. They were taken from the late 1960s through to the early 1970s, and are part of a larger set of 400 or so Polaroids. There are some cool photos here. (No nudity, but it's probably not safe for work.)