The second novel in Stross' Lovecraft/spy/computer hacking series. Where The Atrocity Archives was his take on Len Deighton, this one goes after Ian Fleming and James Bond.
It's a better novel than the first one, too. Really funny and fairly exciting stuff. It also has a high amount of geek-stuff, references to this or that bit of pop culture, Lovecraftian lore, and so forth.
It comes with an extra short story at the end (about the dangers of online gaming and also HR departments) and a fun little essay about Fleming and Bond.