her Christmas at the White House special
[Video here]
I've written (or more precisely posted many images) on the formality and decorum that US presidents showed in public appearances, and how that has devolved into some kind of public display of exaggerated clutchings and hand-holdings. The Obamas are big on clutching and hand-holding. Linked above is their Christmas at the White House interview with Barbara Walters on 20/20 just yesterday, where they don't once let go of each other's hands, and sit so close together that I thought the seat was too narrow. As the picture above shows, there is ample space for several others.