Justin Timberlake made another one of his beloved appearances on Late Night last night when he stopped by to help Jimmy perform the Evolution of End Zone Dancing. Admittedly, some of the moves packed more punch than others, but you take the good with the bad — especially when the good includes JT standing behind Jimmy to play the Patrick Swayze to Fallon's Demi Moore. Pantomimed potters' wheels will never be the same.