A great thing about Greg Egan, apart from his science fiction (which is fantastic, and hardcore), is that his homepage is a mine of information, from biographies and links to $1 ebooks of his short stories, to Java applets illustrating weird maths, and lengthy essays and notes on the physics used in his work. Another great thing is that the technical bits are never foregrounded in the stories, but you come away with a crystal clear understanding of a system you never could've understood in any other way. Or at least, that's what Luminous did for me.