There's a great bit in the April 28 New Yorker called "Pope-a-Palooza," about how events producer Chris Wangro dealt with a 25,000-person youth rally/music festival for Pope Benedict XVI (it's not available online, unfortunately). Some of my favorite parts were about how he Pope-ified a Rolling Stones set, and about how he rallied some ex-Grateful Dead roadies and catering folks to the cause.
Who would have thought you'd have to reassure the crowd that the water in the water bottles hadn't been blessed, so the kids would drink and stay hydrated? Or that you'd have to remind crew not to wear their Black Sabbath t-shirts? Special events production is definitely not for the faint-hearted!