In honor of the 15th anniversary of the launch of Phish Food ice cream, Ben & Jerry's and the WaterWheel Foundation partnered to host this gathering in downtown Burlington that purported to be, as the name would suggest, the "World's Largest Cowbell Ensemble." Led by Jon Fishman, the gathering attracted roughly 1,600 participants.  Whether the ensemble was indeed the largest of its kind is still being confirmed by the Guinness Book of World Records.  Most of the proceeds from the event were donated to WaterWheel Foundation's Vermont Flood Recovery Fund, which helps to repair the devestation left by Hurricane Irene. Prior to the performance, Mike made an appearance at Ben & Jerry's and signed copies of his Steamroller Wheelies: A Restoration Convoy compilation, also benefitting Vermont flood recovery.