Alright, so this is a little project I've been working on for a while now--since Lab Rat came out, actually. I'm definitely a huge Portal nerd, and I'm willing to admit it :P
It's a 32-page essay called "The Grammar Underlying; The Untold Story of Aperture Laboratories". It's my own theorycrafting about the nature of Aperture Science, its characters, history, and so on. I don't necessarily claim to be 100% right, all I can say is that I did my best to not stray too far into the world of wild speculation, I threw out even my favorite theories when they disagreed with facts, and I did my best to make it an interesting read :)
If you've ever spent time thinking about the inner-workings of Aperture Science, ever wondered about Doug Rattmann or Chell or the events of Bring Your Daughter to Work Day, well, this might just be an essay you'd care to read.