poppin, as in dancing. take billie jean motown 25 performance vs. this is it. michael didn't pop on motown 25 but he did a whole lot of it on this is it.

also, the movie had darren from darren's dance grooves as the choreographer lol, the creator of high school musical as the creative director, and that BAD ASS white girl Orianthi on lead guitar. my fav. parts of the movie was when he was telling the musicians and crew how to play HIS music and how to do HIS show.