...then you need to see these videos.
So far, my favorite video is this one:
But there are many more, including this group from Japan, who managed to talk what looks like their mother into doing the dance with them. Also included: a special "Japanese style version."
Do you like flash mobs? Me too! This is a flash mob at the Ohio State University, done to the Glee cast's version of Don't Stop Believing:
More Flash Mobs: Seattle, Italy
Plus, I found this awesome blog the other day! It's called What Would Emma Pillsbury Wear?