The countdown is officially on for The Late Show with Stephen Colbert. Tonight marks the beginning of Stephen Colbert's second-to-last week behind the desk before the show signs off for good on May 21. And if this week's lineup is any indication, CBS and Colbert are making sure the long-running late-night series goes out with a major sendoff.

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 Late Show with Stephen Colbert is ending after 10 years, as CBS cites financial pressure amid speculation over politics.

Stephen Colbert has nothing but kind words for his replacement. After 11 seasons on “The Late Show” and an abrupt cancellation from CBS last summer, Colbert is preparing to bid farewell to late night next Thursday.

Stephen Colbert shrugged off criticism from "Lord of the Rings" fans upset about his involvement in co-writing an upcoming installment of the franchise.

Stephen Colbert joked about running for president with Barack Obama, who said Colbert could outperform some past candidates.