The Cha-Cha-Slide is a perfect example of overlapping lessons, as well as making efficient use of your time and resources.
Among other things, it teaches:
*right from left
*sense of direction, namely front and back
*working together as a group (Everybody clap your hands! clap clap clap clap clap clap clap)
*self-reflection and improvement (How low can YOU go? Challenge accepted!)
*rhythm and tempo
*classic ballroom dance moves (cha cha, yes?)
*copyright infringement and consequences of such
And now, it's time for you to get funky!