Andy Weir's "The Martian" is absolutely fucking brilliant rationalist fiction, and it was published in paper book format a few days ago.

I pre-ordered it because I love his short story The Egg, not knowing I'd get a super-rationalist protagonist in a radical piece of science porn that downright worships space travel. Also, fart jokes. I love it, and if you're an LW type of guy, you probably will too.