I have watched a bunch of movies which I think are therapeutic for depersonalization disorder.
The therapy comes from actually projecting yourself into the picture. Then it gives you new boundaries and a release of emotions.
Stand By Me: I become Gordi. It gives me a role for what I missed.
Movies on kidnap (some Italian):
Ransom, with Mel Gibson and Brawley Nolte
Flight of the Innocent
I'm Not Scared
A movie about being a teen who can't talk:
Trapped in Silence
Movie about being physically abused by one's father