Back when I was in 2nd grade, my school brought in a choreographer (who went simply by Mr. Crane) and we set up a dance battle set to Michael Jackson's "Bad". It looked NOWHERE near as good as this, thanks in large part to the savage arm-flailing that I considered dancing at the time. These kids, however, have some serious skills.
Fun fact: there are 3,670 jealous folks with absolutely no dance game whatsoever who downvoted this video