The dance routine is good, and the clip would be much better if they are actually dancing properly. But the reason I posted this clip is that even with the on-going gags behind the dance routines, I find it funny. It’s not really the dance that is featured on this clip, but by how they have fun doing it. Besides, it’s freezing cold out there in the snow and ice in Gunma Prefecture.
Have fun watching, and don’t mind the dance. 
The Haruhi Suzumiya Dance from the anime The Melancholy of Suzumiya Haruhi. The music is very addictive, and so is the dance.