REAMDE by Neal Stephenson. Disappointing. Begins like a Neal Stephenson novel, and progressively devolves into a big dumb thriller.
Nature's Numbers by Ian Stewart. Fun, brief attempt to explain what mathematicians are talking about when they talk about math, and to survey some cool things in the history of math and in modern mathematics.
The Secret House by David Bodanis. A house serves as a framing device to inspire digressions on all sorts of topics in science, engineering, and the histories thereof. A good book for factoid-lovers.
The Victorian Internet by Tom Standage. There were a lot of surprises for me in this history of the telegraph, and the parallels to the Internet the author was pursuing were more striking than I expected.
Lovecraft Unbound edited by Ellen Datlow. Anthology of mostly original nominally Lovecraft-inspired stories. Highlights were Elizabeth Bear and Sarah Monette's "Mongoose" and Michael Chabon's "In the Black Mill." Joyce Carol Oates' "Commencement" was a turkey.