To my mind, the greatest moment was at Rock am Ring 2004, when crowd had begun to sing the bridge of "In The End" before Chester started, and Mike and Chester tried to shut them up) When I re-watch this moment, goose skin run every time. It was damn beautiful
Actually, there was another moment: when Mike teached the crowd how to sing "Step Up". It's amazing how 100,000 people can shout "Like this!" as if it was one man. DAMN BEAUTIFUL