Hi kal,
I have very, very few good dreams myself (although non-math). Most times I don't dream (or don't remember), but I almost always have very strenuous nights, moving around, turning, waking up, going back to sleep, being in pain for rolling up like a little child and not moving a lot for a few hours, not only clutching a fist but a whole body, so to speak.
Anyway, I have found that there is no "normal". This is your reality and therefore it is normal for you. In the last two years I found that the most important thing for me to learn is accepting my own realities. Transferring this to you: If you have nightmares from those movies, you have nightmares from those movies. The consequence is not watching them. It does not really matter if others have nightmares from the same movies or are not affected by them. You are. You do not have to become like others.
Putting it on "paper" is so easy compared to actually doing it, accepting the self one is. One of my realities is that I can not accept certain treatments at the dentist's. I spent years and years trying to "get over it" or "suck it up" just because "normal people do not have any trouble with treatments such as this". It never worked. Later-on I had come to accept that I am me and not "normal people" or "others". Ever since then, a few years, I have been undergoing dental treatments every other year (twice so far, a third one ahead) under general anaesthesia. That way I have been getting my teeth done, I have limited my anxiety to about two hours before actually going into the dentist's practice, and have no pain whatsoever. I get to sleep through it, and love it. Now I have found my way of dealing with things here.
What I have never learned owing to traumatizing from the day I was born, was being me, my own person. I have learned a lot meanwhile and there certainly still is some to go. But now I find my own ways, and if there are movies that give me nightmares, I stop watching them.
It's difficult for me to find my own ways, but it is really the only way to live my own life. And I have never had as much peace of mind and soul as I have had since having started to travel this road. I wish the same for you.
prime