Have you heard of Improv Everywhere? They’re a group who regularly creates amusing flash mobs.
The big thing I like about Improv Everywhere is that they create meaningful moments. If you carried a torch and everybody went nuts, you’d remember it, and you’d remember how great you felt and how nice it was to get that moment. Improv Everywhere encourages people to get out of their comfort zone, and in that way, I think they make people shine.