Eran Amir traveled throughout Israel and persuaded 500 people to have their photographs taken. Each of the people who posed for Amir's camera held a photograph at chest level. When the photos, and the photos within the photos, are paginated and presented at the rate of five per second, magic happens. Twice.
Set aside a little less than two minutes, and be dazzled by what people can do when they stand still for a minute and cooperate.
Thanks to Dangerous Minds for the tip.