Late Show with David Letterman

With a writers' strike now looking very likely, "Mrs. Letterman" (Jude Brennan) nags Dave into doing some housework; Stupid Pet Tricks include a pit bull terrier that plays the drums and a cockatoo that likes the Backstreet Boys; Bill Scheft interrupts "Alan Kalter's Foreign Affairs Minute" to remind the audience that the WGA needs the public's support; Ryan Adams & The Cardinals performed "Everybody Knows."