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

Show' host, who started his Monday broadcast addressing his ‘Late Show’ counterpart’s cancellation, also posted on social media last week about the news.

Monday night's (July 21) show also featured kiss cam-style pop-ins from supportive fellow talkers Anderson Cooper, Jimmy Fallon, Jon Stewart and Adam Sandler.

The former "Late Show" host took on the network after it announced its plans to take his old program off the air.

Fox News Digital spoke with CBS insiders who question the timing of the network's shocking decision to cancel "The Late Show with Stephen Colbert" next year.

CBS parent Paramount insists that this week's decision to cancel Steven Colbert's “Late Show” was strictly financial, and had nothing to do with politics.

Stephen Colbert slammed Paramount's $16 million settlement with Donald Trump just three days before 'The Late Show' was canceled. The network attributed its decision to financial restraints, unrelated

Whatever happened, fellow late-night comedian John Oliver finds the whole thing “incredibly sad.” Oliver commented on the cancellation while promoting the Erie Moon Mammoths, his rebrand for the minor league baseball team, the Erie SeaWolves.