Conan O’Brien's Kennedy Center Mark Twain Prize ceremony best and worst moments The comedian received the Kennedy Center's 26th Mark Twain Prize for American Humor.

Comedian and former late-night host Conan O'Brien takes home the Mark Twain Prize for American Humor, amid the Kennedy Center's revamp.

Conan O'Brien received the Mark Twain prize for humor in ceremony that drew Sarah Silverman, Will Ferrell, David Letterman and Stephen Colbert to the embattled Kennedy Center, setting the stage ...

Comedian Conan O'Brien received the Mark Twain Prize at the Kennedy Center on Sunday night, which David Letterman called "the most entertaining gathering of the resistance ever." ...

Comedian Conan O'Brien received the Mark Twain Prize at the Kennedy Center on Sunday night, which David Letterman called "the most entertaining gathering of the resistance ever." ...