This is hilarious: An improv group got about 80 people together, had them dress just like Best Buy employees (blue shirt, tan pants, black shoes), go into the Manhattan store one by one until they were all in, and just hang out waiting for customers to ask them questions. They never claimed to work there (customers just assumed it), and were helpful when asked for something. The real store employees thought the whole thing was amusing, but management and security personnel were completely freaked out. Story and pix here.
– Alan Light