Check out this site:
(or at least their youtube channel: http://www.youtube.com/user/ImprovEverywhere )
I love the stuff these people do, it's awesome! I really like the concept of flashmobs; their absurdness, the way they try to wake people up out of their boring, daily routine, bringing people together by doing funny things...
There should be more creative things like this!
Also, the leapfrog comic is almost finished, so stay tuned!