Inception
and
Waking Life
I think both films are a Theory of Everything and therefore represent the driving impulse of my life.
I have a hard time figuring out what my core values are. :C
You don't envisage a purpose of your life? Moments which say "-this- is why I'm - why we're - here"?
Uh, well...I don't really have a mental "list" of values I can reference whenever I want to. It's more like they emerge in response to situations and states of mind. I don't envision a specific purpose of my life. I'll guess I know it when it I see it, though.
I haven't seen any movies that resonated with me enough to provoke such a moment.