Ahh! The concert was incredible. It was my first Coldplay show (even though I've wanted to catch one for about 3 years now), and it totally blew me away. The four of them have so much energy - they just take you away. Chris was great with the audience. He was amazingly charming and engaging. Even though I was back on the lawn and sitting behind a large group of people smoking pot (gag!), I had the time of my life. The whole experience was just thrilling.
I can post a few pictures if anyone's interested, but as I said, I was on the lawn, so they aren't nearly as nice as putainfromage's great shots.