Risk, the science of politics and fear by Dan Gardner (absolutely fantastic book, I already mentioned it on here earlier in the year). The Game (again). I read this regularly to remind me of a few things - it's the book that originally got me fascinated in human interaction. Nemesis (Richard Mullers theory) after a recommendation on HN. A couple of Obama's books (seemed logical to read up on him)- dreams of my Father I especially liked. Snowball (though still chugging through that). In Search of Schrodinger's Cat - a book all about the evolution of quantum theory (and one that gives me my favourite quote of the year: In 1905 Einstein actually published 5 times. The fifth being his PHD dissertation; yes those three individually genius works, which shook the very foundations of physics, were published my a man called Mr Einstein. Despite the artistic license I still love it as a quote :))
Also recommended in this reply