Stephen Colbert took over as host of "The Late Show" in 2015.

Here's the full lineup of guests appearing on Stephen Colbert's 'Late Show' before the May 21 finale, including Barack Obama and David Letterman.

David Letterman returns to 'The Late Show with Stephen Colbert' as the final guest this week before the May 21 finale.

As Stephen Colbert prepares a final sendoff for the Late Show on CBS May 21, the program is planning a slew of late night A-listers next week. David Letterman, who launched the program in 1993 before ...

Stephen Colbert's 11-year run as host of "The Late Show" will end on May 21. That its untimely end was announced mere weeks ...

Colbert has approached the last weeks of his show on his own terms, with A-list guests like Tom Hanks, David Letterman and David Byrne — but the guests for tonight's finale remain a mystery.

Stephen Colbert had a high-profile lineup of guests this week, leading up to the final episode of "The Late Show with Stephen Colbert" on May 21. On Wednesday, Colbert had Barack Obama on his show for ...