Corrected entry: During the final dance scene, a blonde guy pops out of the crowd to do a solo dance. While he is dancing, there are random shots of the crowd cheering. During one of those crowd shots you can spot the young man cheering himself on. (01:38:10)
Corrected entry: How is it that, in a town where dancing has been forbidden for years, at the end of the movie, everyone's able to crank out the newest, most popular dance moves flawlessly?