Inaugural Balls

I've been watching MSNBC's coverage of the inaugural balls, and I find it really interesting that at each ball, the President and First Lady dance alone on a stage (apparently always to Etta James "At Last"). This is very new to me, as I didn't spend much time watching much the Bush inaugural balls, and the Clinton inaugural balls were past my bedtime. I always imagined the President/First Lady dances looking much more like the dance at the state dinner in The American President (which you can watch here, but for some reason I can't embed).