"No fucking way, you got a question from Jay Leno?" says Stephen Colbert. As his own late-night tenure nears its end - a cancelation that shocked the industry and its host - THR reached out to fellow hosts, past and present, including Jon Stewart, Jimmy Kimmel and Conan O'Brien, to help bolster our exit interview. So, on this Friday afternoon in late April, Colbert is huddled in his writers room on the top floor of the Ed Sullivan Theater building, sifting through queries from the only other folks who've walked in his shoes.