I told myself and someone else that I wasn't going to put this one on my list. But I was convinced by another someone else to add it, so here it is. This is a truly geeky book. Being an unabashed geek, I loved it. If you've ever wondered about the excrutiating details of fundamental processes and mechanics underlying neuronal activity, you'll love it too. You've got your relevant chemistry, physics, and molecular and cell biology -- even a bit of genetics -- all laid out for you in one tidy paperback. Before I discovered this book, I had to carry around three or four textbooks at a time. Talk about awkward.
Convenience aside, the effort (admittedly substantial) of getting through the details presented is worth it. If you don't find learning about the basis of how our brains work awe inspiring (or the fact that some very clever people in laboratories were able to sort it out amazing), then you're just not paying attention.
Perfect for: lonely nights, subway rides, looking like a doomed grad student.