The Man in Blue recently created a collaborative pixel-based art project, which is thriving. You should go there to add your own pixel! Do it every day, even. It's fun and easy.
But yesterday, after adding my pixel, I kind of wanted to see the whole thing come together, one pixel at a time. The historical data is there (you can click through the pixels one at a time, waiting tediously for the whole page to reload for each new pixel) but no easy-to-use, dynamic animation of the pixels as they appear.
So I asked the powers that be at The Man in Blue if I could cull their data for a side-project, and they were kind enough to say yes.