Late night's new king gabbed about pop culture at East Hampton's on Saturday. Andy Cohen, the creator of reality TV's "Real Housewives" series and the host of his own talk show, "Watch What Happens Live" sat down for a conversation at the book store, not far from his Sag Harbor home. He is currently on a book tour to promote his New York Times bestseller Most Talkative: Stories from the Front Lines of Pop Culture.