nJames Twitchell takes an in-depth look at the ads and ad campaigns and their creators that have most influenced our culture and marketplace in the twentieth century. P. T. Barnum s creation of buzz, Pepsodent and the magic of the preemptive claim, Listerine introducing America to the scourge of halitosis, Nike s Just Do It, Clairol s Does She or Doesn t She?, Leo Burnett s invention of the Marlboro Man, Revlon s Charlie Girl, Coke s re-creation of Santa Claus, Absolut and the art world these campaigns are the signposts of a century of consumerism, our modern canon understood, accepted, beloved, and hated the world over.