Inspiration
The following are sources of inspiration for individual stories or the entire saga. There are others that are too numerous to list, I've forgotten them, or I'm not consciously aware of them, but these should keep you entertained well enough.
Anime
Fullmetal Alchemist
Fullmetal Alchemist: Brotherhood
Fiction
Gone Girl by Gillian Flynn
House of Leaves by Mark Z. Danielewski
The Zombie Survival Guide by Max Brooks
Vurt by Jeff Noon
The Artemis Fowl series by Eoin Colfer
The Inheritance Cycle by Christopher Paolini
Non-Fiction
Everyday Anarchy by Stefan Molyneux
Practical Anarchy by Stefan Molyneux
The Hidden Messages in Water by Masaru Emoto
Universally Preferable Behaviour: A Rational Proof of Secular Ethics by Stefan Molyneux
Where Did the Towers Go? by Judy Wood
The Missing 411 series by David Paulides
Documentaries
Zeitgeist: The Movie
Movies
Constantine
Final Fantasy VII: Advent Children
K-PAX
The St. Francisville Experiment
Reality TV
Ghost Adventures
Ghost Hunters (TAPS)
Paranormal State
The Dead Files
TV Series
Breaking Bad
Stranger Things
Video Games
Final Fantasy VII
Oddworld: Abe's Exoddus