This was amazing, second only to 2008's Go Skateboarding Day in terms of personal fun. At several points throughout the hour long brawl, I found myself part of the human ocean, rocking back and forth with no control over my direction of movement. And while many a pillow found their mark's, both on my face and on my camera, no damage came of it.
Photo tip: White pillows make great reflectors, so no need for the flash!!