Love this video! We've recently used a version of this with a senior leadership team to highlight how to nudge unwanted behaviour towards a desired norm. The clip supports a piece of research that finds it only takes between three and five people to form a new behavioural norm when visible to a larger group.
You can see this in action as the film unfolds, as one follower is joined by a third person and then by four and five before the whole audience rushes down to join the dance!
The narration on this particular version suggests that following is more important than leading. This is a really interesting thought. After all, there can be no leaders without followers so he has a point!
However, what is true is the importance of having both of these roles. The leader that sets the example and the two, three or four followers that dare to step out of the norm to follow someone who wants to be different. For without all of them, we would continue to dance like our parents!