Anyone possessing a passing familiarity with AMC's Mad Men (returning for its fifth season this Sunday, March 25), knows that alcohol is a massive part of the show's world (please see our list of the best Mad Men-inspired reasons to drink). Just how massive? See the statistics below, gathered after diligent viewing of every episode aired in seasons one through four. We kept track of each time a glass containing booze appeared on screen, and then estimated how much was in each glass to come up with our figures. We just care.