After gaining national notoriety for their research by the late '60s, Masters and Johnson started living the high life. Part of the perks, aside from regular media appearances, was the support of high profile public figures—among them Playboy Editor-in-Chief Hugh Hefner. (Hefner once said that "Masters and Johnson showed tremendous courage in their research.") In fact, when Masters and Johnson visited Chicago they often stayed and hung out at the original Playboy Mansion. According to the nonfiction book on which the show is based, Johnson loved the fact that Hef would leave cookies out for his guests. Apparently when you watch hundreds of people bone down for a living, a good-old-fashioned oatmeal raisin starts to look like a treat.