Read this.
http://www.dionaea-house.com/And then tell me that not knowing everything isn't way better.
And this.
http://www.angelfire.com/trek/caver/page1.htmlYour imagination is far more terrifying than anything that could be written down and not knowing is a million times more terrifying.
EDIT:
Another RP idea that I think would kick ass is, as best I can describe it, a Dark Knight RP. Now, I don't mean it would be Batman, or even happen in the DC universe, but it would have that feeling. There would be no superpowers, just extraordinary characters, with some greater amounts of technology (like Batman), and looser laws of reality (such as the Joker surviving the truck flipping upside unscathed, or the amazing physical feats and intelligence that a large number of the characters exhibit). It would be a darker, more realistic universe (more, not entirely), that had characters like Batman and the Joker, super heroes and villains if you will inhabiting it. I want it to feel like Frank Millers The Dark Knight Returns, or the movie the Dark Knight, or the Watchmen (all powerful naked blue men and freakish alien beasts aside), I want it to capture that dark feeling where wrong is done for right, where even though some events may make you hopeful, you still see the horrible darkness of humanity for brief instances. I want us to create a tale where we can experience the joy and hope of a boatful of convicts throwing away their lives to save a boatful of civilians, where we can be crushed by the horror of a massive alien created by a man we considered to be a hero, and know in our hearts, that despite the evil of it, it was also what was right, what was necessary. I want us to be moved by the power of one man to change the world for the better, to do what has to be done, to make the hard choice despite the horrible consequences. In short, I want an over the top fantastic story in the dark and gritty world of reality.