Kevin Hart - David Letterman rocked the world of late night talk shows last week when the legendary Late Show host announced he would be retiring next year after 31 years. There's no doubt a new era is underway for late night chat shows — Jay Leno finally gave up his throne earlier this year — so we're looking at a few good men and women who could, literally, take Letterman's seat. Our list of ten comedians who could take over the Late Show starts with Kevin Hart. The Real Husbands of Hollywood star has gone from Philly comedian to household name with hits like Think Like a Man, Ride Along and several sold-out comedy specials. Like Letterman, Hart's humor is both sardonic and self-deprecating but ultimately full of heart.  (Photo: Bennett Raglin/BET/Getty Images)