Movie theaters across the country will screen The Grateful Dead Movie on April 20 (heady!). The film will be broadcast in nearly 540 movie theaters through the Digital Broadcast Network at 7:30 PM local time. As many readers will recall, The Grateful Dead Movie was shot at San Francisco’s Winterland Arena in October 1974 before the Dead’s hiatus. This enhanced version of the classic film will also include bonus interviews with Jerry Garcia and Bob Weir. A complete list of participating theaters can be found here.