Both modern classics, the Cannes Grand Prix winners "Lamp" and "Grrr" are the latest additions to the 20th Anniversary Work Gallery, where you can see the best work of the last 20 years and vote for your favorites. The winner will be announced in June. Each week until then, we'll release a couple more spots. Use our rate-the-ad feature to describe how each spot ranks among the greatest. Please reserve your "world changing" scores for the spots that truly changed your world the most, the ones that set a new standard and altered the course of ad history. Enjoy the work, and keep coming back to see updated scores, comments, and content.