Disclosing trysts, Letterman deftly contained damage, PR pros assert ‘Late Show’ host blends candor and humor in on-air explanation to his audience. By Rob Reinalda@word_czarOct. 5, 2009 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.