He's finally taken the "Colbert Questionert" himself.

Stephen Colbert's second-to-last "Late Show" featured one cameo after another, including Robert De Niro, Ben Stiller and even Colbert's wife.

The celebrity guests asked Colbert questions ranging from his "favorite action movie" to whether he preferred "cats or dogs" ...

Stephen Colbert continued winding down his run on CBS' "Late Show," with his penultimate show on Wednesday where he brought a viral segment to a close with the help of many A-list stars.

Colbert is finally known!

Stephen Colbert is waving farewell to his eponymous talk show in style! Several of Colbert's celebrity friends took turns questioning the 62-year-old host during The Late Show with Stephen Colbert's ...

Stars including Robert De Niro, Billy Crystal, Martha Stewart, and more quizzed the talk show host.

Ahead of the end of 'The Late Show,' host Stephen Colbert sat down to answer questions from his fellow current and former late-night hosts, including Jay Leno, Jimmy Fallon, Jimmy Kimmel, Seth Meyers, ...

Late-night host Jimmy Kimmel demanded to know why Stephen Colbert was being asked to make a case for late-night's existence during "The Late Show" alongside Seth Meyers, Jimmy Fallon and John Oliver ...