I love this video, perhaps you've seen it before but I personally really like it. (this is coming from someone who hates christmas music!) The first girl that gets up and starts singing, she's so bad-ass. Then the second guy, you'd never expect him to sing like that. I fucking love flash mob stuff, getting people around you to sing with you. The energy of a bunch of strangers uniting together with singing, and for it all to come together this well. Amazing! I'm amazed at how well everyone sings, though i think the organizers are pretty much carrying it all (especially that super high note) I wonder how many people were in on it and how many people just joined in because they knew the words.

One time i was on a packed queue line for an indoor roller coaster (Skull mountain at 6 flags for those of you in the area), and the crowd burst into "I believe i can fly" by R Kelly, it was one of the best things ever.