6. 'The evolution of mom dancing' with Michelle Obama
Feb. 22, 2013
The first lady stopped by "Late Night" for one of Jimmy's most memorable dance collaborations, ever. The two dressed in mom duds -- cardigans and khakis -- and Jimmy even sported a wig while they danced some classic moves we've seen (or dreaded seeing) our moms pull out at parties. The video has racked up more than 15 million YouTube views in less than two months.