Gregg Mitman thought Tales from Planet Earth would be a one-shot deal. The UW-Madison history of science professor and interim director of the Nelson Institute for Environmental Studies was a principal organizer of the 2007 environmental film festival. “Opening night, there was a line two blocks long waiting to get into the Orpheum,” he remembers. He had anticipated 500 people might show up that first night. Instead, more than twice that number turned out. By the end of the festival, total attendance was estimated at 3,500.