Jon Heder/Ashlee Simpson

Sketches include “George W. Bush and Harriet Miers,” “Taco Town,” “Caitlin’s Science Fair,” “Werewolf Date,” “The Misadventures of Tom Delay and Bill Frist,” “Showbiz Grande Explosion!,” “Wilson Brothers Funeral Home,” “Hubbard Systems,” “Operator Date,” and “The Black Eyed Peas.”

Ashlee Simpson performed “Catch Me When I Fall” and “Boyfriend.”