Machine Man (Max Barry)

This is a strange story, darkly humorous, and I loved it. The first-person narrator is an engineer working for a soulless corporation dedicated to making whatever technology will bring in the most money. He is brilliant and rational and very bad at social relationships and fuzzy thinking, and has always had a feeling of connection to machines. When an industrial accident costs him a leg, he is disappointed in the poor quality of the prostheses available and dedicates himself to the project of building a better leg in the lab. He does--but it doesn't stop there. Behind the humor and absurdity of the steadily-increasing mayhem is an exploration of what it means to be human, of whether we are our bodies or whether all our parts are just inefficiently engineered biological components we can replace with something better, and what it would mean if we did.