When the Obamas curl up on the sofa to watch late-night TV, they probably favor the “Late Show with David Letterman” over any of its competitors.
President Barack Obama will make his seventh appearance on the show on Sept. 18. It will be his second appearance since his election as president. The last time he was on was Sept. 21, 2009.
For her part, the first lady just did the show on Aug. 29 and went back again on Sept. 6 to deliver the Top 10 list from the Democratic National Convention.