This video kind of reminds me of a really rubbish job I had when I was 14-years-old. For about two quid an hour, I supervised the 'Toddler Village' in a play/adventure center that did parties for the under 12's. Part of my job was to act like I gave a damn while performing song-and-dance routines to the tune of Agadoo and other songs that I couldn't stand (I probably had as much enthusiasm as this guy).
I wonder if these guys are as unhappy as I was? I'd go with yes, considering singing and dancing was actually in my job description and it almost certainly isn't in this case. I'm guessing the girl in green is responsible because she seems to be leading the dance and is constantly offering encouragement like, "C'mon do it, do it, do it!"
Now the only question is, are those regular folk in civvies actually joining in or are they Microsoft plants?