December: Snow Crash by Neal Stephenson.
The next poll will pick two books. I'd like to do it that way to keep a strong second place contender from being overlooked, and so I don't have to update the poll so often.
Discuss The Three-Body Problem [wikipedia.org] by Liu Cixin in the comments below.
Snow Crash [wikipedia.org] was written by Neal Stephenson [wikipedia.org] in 1992. The novel features a bit of a Calexit scenario, and is known for popularizing the term "avatar" (paving the way for James Cameron's true magnum opus). These days, Neal moonlights as Magic Leap's [wikipedia.org] "Chief Futurist". Seems appropriate.