Daniel Suarez - Daemon & Freedom™
John Twelve Hawks - Fourth Realm trilogy (The Traveler, The Dark River, The Golden City)
Stieg Larsson - Millennium trilogy (The Girl with the Dragon Tattoo, The Girl Who Played With Fire, The Girl Who Kicked the Hornets' Nest)
James Ellroy - Underworld U.S.A. trilogy (American Tabloid, The Cold Six Thousand, Blood's a Rover)
Also if you're in the mood for fantasy stuff I'd recommend the works of China Miéville (particularly the Bas-Lag trilogy: Perdido Street Station, The Scar, Iron Council) and George R. R. Martin.
And if you're in the mood for dense reading I'd recommend the works of Thomas Pynchon. Takes a lot of work to get through his books but it's well worth it; he's one of the best prose stylists I've ever read and you're sure to appreciate the anarchist sentiments in his work.
Though come to think of it, you'll probably be more in the mood to appreciate Pynchon after you've read Roberto Bolaño. Or at least I was.
2666 is also great although it's mostly set in the same city for most of it.
That should be a fair kickoff selection. Judging from your reaction to those I'll know what other stuff to recommend. Make sure to read all of these in order; in some cases you shouldn't even pick up the second book in the series before finishing the first. There are massive, massive spoilers for
Daemon in the book description of
Freedom™.
I should pick the Dresden Files up again but I have so many other books I'm reading. The nice thing about that series is that waiting in between books doesn't matter that much because there isn't all that much continuity between the plots. As opposed to something like the Wheel of Time or A Song of Ice and Fire where if you forget who some of the characters are you're boned.