oh, I would have been totally embarrassed. I don't like attention on me unless I prepared for it. I had a significant career on the stage, but I was once thrown a suprise party and I left crying. lol.
As to the tear thing I don't know. What got me each time was how many people WANTED to be a part of her experience. When they showed up with the computers? That's where I lost it. I guess it was just all the love people had for her more than the song or performance.
The one that was a flash mob kinda thing in Disney? THAT was overwhelmingly awesome and more impressive (to me) than this one, but this was just so all about showering her with love. That will destroy me every time.