A couple of books that I'm infatuated with at the moment:
The Transition Handbook by Rob Hopkins, which as far as I can tell has spawned one of the fastest growing social movements in the world today. Transition Towns are all about taking the twin terrors of climate change and peak oil, and instead of despairing, beginning to rebuild local communities and generate a range of local initiatives to increase resilience.
The Urban Homestead by Kelly Coyne and Erik Knutzen. Hubby and I are completely engrossed by this book. Our bookmarks keep leapfrogging each other as we race through the homesteaders' pragmatic and light-hearted approach to living gently and self-sufficiently in a city. Everything they describe I want to try, and I'm constantly amazed at how each new project (making butter, building raised garden beds, harvesting rainwater) can be done easily and cheaply and produce multiple benefits for my family.