It's not the showiest dancing imaginable, but I'll give them an A effort. I thought it was awesome that they performed to a megamix of her hits, because Britney has so many memorable tunes that it would have been a shame for them to have performed only one.
Once the first dance, an unexpected: the radio breaks. Yet fans are not bothered. They looked at each other and danced to the sound of their voices. "I never danced that way. I felt like Britney on his show", said one fan happy and panting after the flash mob.