There are some stories that stick with you, that live in your soul and change your world forever. Harry Potter is one of those for me. A big part of it is the music from the movies. Whenever I hear music from HP, I get a huge smile on my face and feel like I'm glowing from the inside. The Lord of the Rings soundtrack has the same effect. I literally cannot focus on anything else when I hear that music (and I can tell you what movie a specific song is from and what part of the movie. I'm crazy like that with soundtracks).
The same thing has happened to me with the Hunger Games. I really like the books, but the movies have had a profound effect on me. The sound of the mockingjay whistle specifically is like a magic button that immediately turns on the waterworks. The whole trailer for Catching Fire (which was an incredible movie, by the way) gives me the chills, it's just so good.
I doubt I'm alone in this. What movies and/or stories move you the most?