If it's about material influence;
I'd have to say that a lot of movies have really changed the way I think (Fight Club, Ghost in the Shell, Mononoke Hime, Requiem for a Dream, and lot's of other ones).
Also books and music have played a large part. The music I listen to at a given time is very reflective of the stage of my life I was in.
Authors like Kurt Vonnegut, Haruki Murakami, James Clavell, Mario Puzo, Dante Aligheiri, and many others have altered the way I think as well as inspired and awed me by their works, even though some of them are more superficial than others.
I have too many influences and inspirations to write here, though. That's just a few.
