Anderson Cooper and other celebrities rallied behind "Late Show" host Stephen Colbert after CBS announced it was cancelling the liberal late-night program.

Adam Sandler, Anderson Cooper, Jon Stewart, Jimmy Fallon, Seth Meyers, John Oliver and Andy Cohen were among those who made surprise appearances on Monday's episode after CBS announced that the late-night show would be ending in May 2026.

Late-night rivals and other celebrities rallied to support CBS "Late Show" host Stephen Colbert after the network canceled his show, and comedian Jon Stewart lashed out at Paramount Global for the decision to end the long-running TV program.

Stephen Colbert announced "The Late Show" was cancelled three nights after revealing his summer mustache on air. Coincidence?

Sandra Oh criticized CBS and Paramount during her appearance on 'The Late Show with Stephen Colbert' on July 21 after its cancellation was announced. The network said it was "a financial decision," but the news came days after Colbert criticized Paramount for its $16 million settlement with President Donald Trump.

The surprise cancellation of The Late Show is just the latest blow to the genre.

John Oliver has weighed in on CBS' cancellation of "The Late Show With Stephen Colbert," calling it "terrible news for the world of comedy."

CBS has canceled The Late Show with Stephen Colbert just a few days after Colbert criticised the network’s parent company, Paramount, for its high-profile settlement with President Trump.