Pattern Recognition by William Gibson. Really, anything by Gibson is worth reading multiple times, simply for the great writing style. Pattern Recognition also

Pattern Recognition by William Gibson. Really, anything by Gibson is worth reading multiple times, simply for the great writing style. Pattern Recognition also does something special: have you really ever /thought/ about brands and advertising? Lots of commentary on culture, memetic fashion, and what it means. Recursion by Tony Ballantyne is a book that I didn't actually like all that much, but reread anyways. It covers a lot of topics I love (global AIs, Von Neumann Machines, tulpas, trusting trust, and a totalitarian utopia). The plot leaves a lot to be desired, but the concepts are worth it.