Topic: Harry Potter and the Methods of Rationality
Okay, I'm not sure how to explain this without it sounding lame at first but bear with me.
Harry Potter and the Methods of Rationality is an on-going fan fiction story, written by a scientist involved in researching A.I. It's an alternate universe story in which Harry's aunt (who, in this world, he considers his mother) married a scientist instead of a small-minded drill salesman.
Harry is still the Boy Who Lived, still gets his letter from Hogwarts, but insists on applying the aforementioned methods of rationality to every new magical discovery that comes his way.
It's Harry Potter, rewritten from a skeptical angle. Which I love first of all because it makes the point that skepticism isn't about abject denial of things like magic. It's just about an insistence on evidence. When Harry gets his evidence, Harry accepts and assimilates it, even if he doesn't necessarily understand all the implications yet.
The writing style and sense of humor are right in the same vein as Rowling's own, and the sheer absurdity of applying such strict rational sense to a magical world is in itself quite funny even as it makes a lot of sense. There's an amazing scene in Gringotts where Harry considers how easy it would be to game the crude economic system of magical Britain, and his first meeting with Draco Malfoy goes much differently than in the official canon. He drives McGonagall (who in this story takes Hagrid's role of introducing Harry to the wizarding world) completely up the fucking wall, and when he meets Ron at the train station finds him a bit of an idiot. My understanding is that in this fic, Hermione is Harry's school nemesis, though I'm only 7 chapters in.
Anyway, if you like the HP books and critical thinking (and Calvin & Hobbes, incidentally; alt-Harry has a distinctly Calvinish precociousness and "chaotic good" personality), I highly recommend you give this one a read.