Stephen Colbert is closing out The Late Show with a star-studded final week of guests including Barack Obama, Tom Hanks, David Letterman, and his fellow late-night hosts, ahead of the May 21 CBS finale.

The host's lips are making their rounds before 'The Late Show' signs off the air for good.

Stephen Colbert‘s guest lineup for the final two weeks of CBS’ “The Late Show” will showcase a lineup of heavy-hitting late-night talk show hosts. “The Late Show” will end on May 21, but before the final episode, Colbert will have a number of high-profile guests.

As “The Late Show” winds down following last year’s announcement of its cancellation, Stephen Colbert has set an all-star lineup of late-night hosts as some of his final guests. On May 11, Colbert will interview Jimmy Fallon,

"Would you please come on my show? We don't have to talk about politics," Colbert wrote in a letter to his dream guest.

Stephen Colbert took Jimmy Fallon off guard on Monday night, when the CBS late night host planted a kiss on the NBC late night host. Yes, really. The smooch occurred during a game with fellow Strike Force Five hosts Seth Meyers,