I'm sure there is a topic somewhere with books and movies and such that are SR related, but I can't even fathom how to start searching for it, so I'll throw out these two books in this here thread. The short story is that a computer program written by a dead game programmer begins killing people and slowly recruiting humans to do work for it. What is its goal? You'll have to read to find out. Does it succeed, or will the people attempting to oppose it and its growing network of human operatives succeed?
The book follows many interesting ideas, many of which don't fully show up until the second book, but they include things like governments being superseded by corporations, including allowing corporations to operate personal mercenary armies within US boarders. The other great thing is the dark-net which has tons of stuff in common with the SR matrix, specifically the AR and how people interact with it. There is also technology grade magic (one character for example can shoot lightning from his fingers using technological means).
There are plenty of unexpected twists, double crosses, and mysteries, and the book could easily provide enough material for an SR entire campaign.