The Light Factory teams with the Sundance Channel to present a screening of The Greening of Southie, a documentary about Boston's first green residential building. The film follows each step in the development and construction of the condominium that was created with the specific goal of landing a Gold LEED (Leadership in Energy and Environmental Design) rating from the U.S. Green Building Council. At 5:30 p.m., an hour before the screening, attendees are invited to take a 30-minute guided tour of the LEED silver-certified ImaginOn facility. After the airing of the film (at which director Ian Cheney will be present), Wendy Fishman, The Light Factory's director of film/video, will host "Modeling Green Building in Charlotte," a panel discussion with local green builders and advocates. Free (donations accepted at door); reservations recommended. 6:30 p.m. Wachovia Playhouse, ImaginOn. 704-333-9755 or www.lightfactory.org.