Last year, it was Tina Fey; this year, Will Ferrell rocked the Kennedy Center as he won the prestigious Mark Twain Prize for American Humor last night. The star-studded gala saw speeches from celebrities as diverse as Ben Stiller, Ed Asner, Molly Shannon, and Gwen Ifill, the Washington Post reports. It was a low-stress night for comedians, quipped Conan O’Brien: “Tonight, we only need to be PBS funny.” (The award ceremony airs on the channel next Monday.) Some highlights: