[kgwxd]

In my experience, "a movie playing" wouldn't be the right description. I never have a super clear image of characters in my head. More like a vague cartoony idea that can morph drastically through-out the book or even when re-reading. Once I see a movie though, I'd have to force the imaginary version back. Without effort, it's probably the actor in my head, but still not super clear.

Environmental descriptions seem a littler clearer and consistent, both man-made stuff, like buildings and vehicles, and nature, but still nowhere near stable.

[kgwxd]

One thing I just realized is that, when it comes to audio, I can both imagine and recall far more clearly than anything visual. And, now that I think about it, it feels 100 times more clear.

Can you "hear" in your head?

[michrassena]

I sometimes get portions of songs stuck in my head for a day or two, but otherwise no music unless I'm really tired. The depiction of hearing someone else's voice when reading a letter from them always fell flat with me.