Three agents entered a Starbucks one by one with their own giant desktop computer and CRT monitor rig. They bought coffee and worked at their computers as if they were laptops. One computer even had a Wi-Fi card installed, enabling our agent to surf the web.
This is one of nearly 100 different missions (funny pranks) Improv Everywhere has executed over the past eight years in New York City. Others include the Best Game Ever, the Food Court Musical, and the famous No Pants Subway Ride, to name a few.