Here's a guide to the specialized sign language used by the Maitre D' and staff at NYC's swanky Eleven Madison Park restaurant; there's also a set of traffic rules to keep things moving smoothly (staff walk clockwise and keep right, guests and staff leading guests have right of way, followed by hot food, cold food, empty plates, and then empty-handed staff).
Sign Dining – Op-Art – NYTimes.comArt
(via Beth Pratt)