If the crowds seem larger than usual at a certain McDonald's in Warsaw, Poland, chalk it up to the menu. We're talking about a billboard-sized menu, hand-drawn in multicolored chalk twice daily by graffiti artist Stefan Szwed-Stronzynski as part of a campaign cooked up by the local office of DDB, art studio Good Looking and Krewcy Krawcy Productions. The goal, per the creative team, is to capture "the freshness of McDonald's food" and the breadth of its offerings in a highly flexible way. I'd say they've succeeded, but no matter what this McD's is serving, the menu itself is the special of the day.