The High Five Escalator

Improv Everywhere is an awesome improv group based out of New York City that pulls off pranks/performance art in public places. They are most famous for the "people frozen in Grand Central" stunt that made national news. But this latest stunt, the high-five escalator, goes back to the heart of why they do what they do: to make people laugh and be happier as they go about their day. Great, great stuff.