During Metallica's encore in Australia on November 11th, Kirk Hammett was kicking the big Metallica balloons into the crowd as usual.  All was fun and games, until a kid (possibly James Hetfield's son), got in the path of one of the flying balls!http://www.youtube.com/watch?v=ADwP2zsftIw

It's not believed the kid was hurt...just in case you were wondering.