John Oliver, Jon Stewart, Jimmy Fallon, Seth Meyers and more had cameos during the July 21 episode of "The Late Show With Stephen Colbert."

Stephen Colbert is making headlines as The Late Show approaches its final season. In a rare show of late-night unity, Colbert welcomed Jimmy Fallon, Seth Meyers, Jon Stewart, and John Oliver on Monday night’s episode following CBS’s decision to cancel the program.

Stephen Colbert got an assist on 'The Late Show' from some of his late-night rivals following CBS's sudden decision to axe the show.