AMC series Mad Men has become a promotional whorehouse. John Slattery hawks the Lincoln car brand. Christina Hendricks is the spokeswoman for Johnnie Walker Red Label. Now, Jon Hamm provides voiceover for American Airlines. Oh, and let’s not forget Elisabeth Moss whining about migraine headaches for Excedrin. So when will Teyonah Parris land an appearance in the My Black is Beautiful campaign?