A 2008 documentary, The Garden follows the incredible story of the urban South Central Farmers (in Los Angeles) struggle against back room city hall deals and shady developers to preserve their community garden. The South Central Farmers had been farming the land and feeding their families on 14 acres encircled by warehouses, with the downtown skyline in sight. Their struggle drew the attention of celebrities and activists alike.
I love documentary films and this one was very engaging, despite the emotional rollercoaster the farmers faced within the legal system. The film was nominated for an Oscar in January 2009. This film is available here on Netflix (you can also be watched instantly on Netflix if you don't want to wait for them to mail the DVD to you).