http://www.nytimes.com/2014/12/11/business/media/david-letterman-to-leave-the-late-show-in-may.html 2014-12-10 19:24:51 David Letterman to Leave the ‘Late Show’ in May Mr. Letterman, who is retiring, had a 32-year run on NBC and CBS, the longest tenure of any late-night host in television history. === David Letterman Mr. Letterman, host of the “Late Show With David Letterman,” had a 32-year run on NBC and CBS, the longest tenure of any late-night host in television history. His successor, “David Letterman has given to all of us a remarkable legacy of achievement and creative brilliance that will never be forgotten,” Leslie Moonves, chief executive of the CBS Corporation, said in a statement. "It’s going to be tough to say goodbye, but I know we will all cherish the shows leading up to Dave’s final broadcast in May.”