Currently reading The Age of Wonder: How the Romantic Generation Discovered the Beauty and Terror of Science by Richard Holmes. If you have any interest in the Romantics or science history at all, it's an excellent and emphatically recommended book. Full of information, very well-written, with brilliantly fleshed-out portraits of the players in these early days of inquiry.

Also have a couple books I've borrowed from friends. They ought to be next, but I'd really like to get around to reading Haruki Murakami's 1Q84. It's just been sitting here, casting a sour glare any time it can catch my eye, since I picked it up on the release date.