August 14, 2009 10:40 am A Look Back at Woodstock Forty years ago a three day music festival astounded the country as hundreds of thousands flocked to hear Hendrix, The Grateful Dead, Jefferson Airplane and more as they let loose in rural New York. US & World Videos 1:36 Arizona Senate repeals 1864 abortion ban 1:40 Democrats say Big Oil misled public for decades about climate change 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look