I guess I might as well start it off. I really have been enjoying physics books lately. I'm sure you have all heard of/read Brian Greene's trilogy as well as Stephen Hawkings, so I wont bother posting them.
A couple books I have really enjoyed lately have been
Massive, The Hunt For The God Particle by Ian Sample
It's less about the physics behind the search for the Higgs Boson and more about the story of the search. The book 2 years old but is still a great way to get up to speed on where the research is going. It's also a very light read. Good book for anyone interested in particle physics and the large hadron collider.
Whole Earth Discipline; An Ecopragmatist Manifesto by Stewart Brand
This one is about environmental problems we will face in the next couple decades. He has some very cool ideas on what to do. Don't expect a "normal" book about the environment though. A lot of environmentalists might actually be a bit horrified what he has to say. Again this is a nice light read.