star wars, hands down. its the ultimate clash of good and evil. and the jedi order itself. genius, pure genius. oh and the quotes. you can fill a whole self-help book with those. after watching each movie, i get this urge to become a jedi. i always try to move stuff with my mind knowing full well that it wont work..... wait thats it! perhaps they arent moving because i dont believe they will. oh to have the mind of a child again where i could believe anything was possible. wait, thats why jedi training begins so early. the child truly believes he can, therefore, he is able.
you see? star wars is so powerful that even a thread about sci-fi makes you go deep into it.