We’re fans of Improv Everywhere’s work here at Gadling. There’s Frozen Grand Central, Food Court Musical (my favorite) and welcoming home strangers at JFK. Here’s another one designed to put a smile on the face of New Yorkers and one idea to try at home. All you need is a couple of friends to hold signs, an escalator and a hand. This video is of a packed subway station in New York City, but a busy shopping mall would work as well.