I am a mathematician and a Bayesianist with an emphasis on the more theoretical side of rationality. I like smart characters that win. I looked at some recommendations on other topics, but there are too many options.
Give Neal Stephenson a go. Snow Crash and Cryptonomicon are good starting points.
This is a thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. The previous thread is at close to 500 comments.