Eco-environmentalism in India. The success story (so far) of the save-silent valley movement, summarized in this documentary. The same environment vs progress debate in India - and I feel this is one of the successes of Indian democracy. (As opposed to China - and its three gorges project).
Silent valley seems to be in good shape now - what with buffers being created by the left leaning UDF government. Keeping fingers crossed about the future.