One series I love that is fast paced and action filled is Kelly McCullough's WebMage series.
A little of everything. Hacking, sentient AIs, Gods and more. And did I mention action?
Here is a writeup on McCullough's web site about it:
Kelly McCullough's first novel, WebMage was released by ACE books in 2006 and followed by a four sequels to complete the series, Cybermancy in 2007. Two more books in the series, CodeSpell, MythOS, SpellCrash.
The WebMage books are a fantasy-cyberpunk hybrid set in a universe where an ever-increasing number of life threads has forced the Greek Fates to a upgrade the great loom of Fate into a computerized system that blends magic with programming. Of course, where there are computers there are also hackers. Enter Ravirn, a hacker/sorcerer, and his laptop familiar, Melchior. Ravirn is the grandson of both the Greek Fate Lachesis and Thalia the muse of comedy and comedic poetry, making him the end product of Fate and Slapstick. Together with Melchior he takes on Fate, Hades, Nemesis, and all other comers. The results range from disastrous to catastrophic with many side trips into the sublimely silly.