There was truly nobody like David Letterman. The longest reigning late-night host in history, Letterman was quick-witted, irreverent, and hilarious. But it wasn't all laughs—for David Letterman, fame came at a terrible price. So what was Dave's life like behind the curtain? Why did Oprah hate him for so long? What made him walk off the set in the middle of a live taping? Dive in and learn more about the rebel of late-night.