We've seen countless flash mob performances for countless strangers in shopping malls and subway stations, fast food restaurants and the like.
This one seems just so much more meaningful.
Here, Amy, who according to the video below is stricken with terminal cancer, is "mobbed" by 50 of her closest family and friends.
Fittingly, the group dances and sings to the Emotions' "Best Of My Love."
As Amy's children and husband tell her in the video, they wanted to show her that she had the best of their love.
Now, prepare for a flash mob of happy tears.