The group Improv Everywhere has sponsorship and success now.  So their stuff has gotten more elaborately produced, but also less edgy and pointed.

Therefore, this:

and this:

has given way to this:

While the newer one is an interesting idea, it is also executed so as to be safe, safe, safe!  The older ones (BestBuy is my personal favorite, BTW), could have ended badly.  They didn’t, but the dance with danger is some of what makes them so awesome.