ポケモン着ぐるみで踊る姿が可愛すぎる！ ももいろクローバーZ『みてみて☆こっちっち』のふりつけ動画が公開 [Kotaku Japan]
Is there a name for this type of dancing? It's so prevalent in girl band J-pop, anime, and games like Idolm@ster and Project Diva. I was in Shinjuku a few weeks ago on a vacation, and right outside the train station, a bunch of girls in cheerleading costumes danced similarly to promote Aquarius, Coca-Cola's ripoff of Pocari (think grapefruit Gatorade). So I now think of these as "cutesy J-pop cheergirl" dances.
I vaguely remember a dance craze from years ago called Para Para, which was its own thing, I think.
(Video is a fan-created dance for an intro song for an anime series called Bakemonogatari.)