Here are two lines from the Live 8 Wikipedia page:
During the opening of the Philadelphia concert, Will Smith led the combined audiences of London, Philadelphia, Berlin, Rome, Paris and Barrie (outside Toronto) in a synchronised finger click. This was to represent the death of a child every three seconds owing to poverty.
and
Chris Martin of Coldplay described Live 8 as "the greatest thing that's probably been organised ever in the history of the world".
