I'm going to break the roadblock of an N by cheating:
Nightwatch
either by Terry Pratchett or Sergei Lukyanenko, on RegeneratioN.
I know I've used one of them, and suspect I've used the other, but I'm not sure, so I'll pretend I didn't.
The Pratchett is perhaps my favorite of this funny, slapstick, ironic, satirical writer of fantasy. The Lukyanenko is the first of a fantastical Russian trilogy involving the usual conflict of good and evil, which has somehow been reduced to a bureaucracy. The first two have been made into movies--I saw Nightwatch, which was pretty good in its bleak way.