Affection from movies and books

I am going to make an assignment in school. I am thinking about writing how you can get affected so much by watching movies or reading books. I saw this movie the other day, Moonrise Kingdom, and it really got me. I thought about my life and how to live it and so. It is to me a great thing that movies, plays and books can affect me so much and inspire me.

So I wondered if some of you guys could give me some links or hints to where I can find explanation about this topic. Both biologically and so. Thanks.

-Esben Due Yding