My brother Adrian passed along this one. HumanClock.com features the current time, but the display is made up of people holding signs with that minute’s time. So, that’s right — there’re 60 * 24 pictures in their database of people holding up signs. Actually, there’re more pictures than that, since they insert new pics into the rotation from time to time.
Be sure to also check out the FAQ. My favorite part is how the guy beats-around-the-bush in trying to explain the significance of “4:20”.