Late Show with David Letterman

The U.N. In Memoriam; something for our Dutch friends; more tax returns from Mitt; and a Top Ten list. TOP TEN: WORDS THAT ALMOST RHYME WITH 'MAHMOUD Dave and the Prime Minister talk about the Arab Spring, the Euro, the financial state of the U.K., running for the office of Prime Minister, and the successful Summer Olympics and Para Olympics. And Larry the Kitty. Jonny's in the new CBS drama "Elementary." Jonny is Sherlock Holmes! Playing the role of Dr. Watson is Lucy Liu.