I love Flash Mobs too! Check out Improv Everywhere on YouTube. I think it would be great to come up with our own Flash Mob, just have to have a fun idea, coordinate a time to arrive and then have a great time with it. I even thought it would be fun to get a bunch of people to show up at one of the grocery stores and everybody get the same single item and then line up only the fast lane-refusing to change lanes because you want the "fast lane" Can you imagine twenty people all holding a jug of milk lined up in the fast lane! OK, so maybe that would be too lame but you get the idea. Now you come up with a better one! Then we can all vote and see whose idea we do. We can even join Improv Everywhere as they have "affiliate" sites like Improv New York etc.