Greg Behrendt is an American comedian, talk show host, TV producer, and author. His work as a script consultant for the HBO sitcom Sex and the City paved the way for co-authoring of the New York Times bestseller He's Just Not That Into You (2004), later adapted into a film by the same name. He also hosted two talk shows, The Greg Behrendt Show (2006) and Greg Behrendt's Wake Up Call (2009).