I'm reading about one man's trip to North Korea as part of his Axis of Evil Tour *pops*, and he mentions seeing the Arirang performance, which involves 50,000 people or more acting in concert to create complex pictures out of little colored paper cards, all for the benefit of the other 50,000 or so on the other side of the stadium.
This is probably as close as we'll ever get in our lifetime to tens of thousands of North Koreans dancing to the Village People's Y-M-C-A.
Minus the disco beat.
But plus really cool costumes.
Here, see for yourself: