A simple and very engaging concept, ask 50 people one question and go from there. I saw an earlier video a while back from New Orleans but didn't know they had more up. It's interesting to see the responses from each person and how they react to the question asked. I'm trying to answer this one at the moment "By the end of today what would you wish to happen?".
Check out the site for more videos and have a read of the comments where other people have answered as well.