Will Ferrell accepted the Mark Twain Prize for American Humor at the Kennedy Center for the Performing Arts in Washington D.C. on Sunday.

The 44-year-old Old School star was honored for his career in comedy that spans TV, film and online ventures (he’s one of the creators of the website FunnyorDie.com).

Many recalled Ferrell’s dead-on George W. Bush impersonation, which he famously performed on Saturday Night Live as well as the Broadway show, You're Welcome, America: A Final Night with George W. Bush.

PHOTOS: Celebs Arrive To The 2011 Mark Twain Awards In Washington DC

Stars who took the stage to honor the Anchorman A-lister Sunday included Conan O'Brien, Jack Black, Matthew Broderick and Ben Stiller.