Consumers have a paradoxical relationship with advertising. To our great personal detriment, we routinely resist health-related warnings from legitimate authorities such as the Surgeon General. At the same time, we readily accept advice from illegitimate authorities, even those who begin their appeal by admitting that "I'm not a doctor, but I play one on TV." This chapter describes three studies designed to tackle the latter problem-maladaptive gUllibility. However, it turns out that that the former problem-misplaced skepticismproved far easier to solve.