Martial arts in Zumba!
One of the tracks I'm currently using in class is "Coisa Brasileira". This has elements of a style of martial arts called Capoeira. You may have missed that we sneaked in some martial arts, but this is because this style combines elements of dance, as well as acrobatics.
The move that we've 'stolen' is based on a move at the heart of Capoeira called ginga. The video featured here shows the ginga.