Has anyone stated this already? Apologies if that's the case.
What about having specially created films, such as horror ones where the level of horror depends on the persons reaction, by simply measuring their facial expression, which is already possible. It could either make it more scary etc, if the person is showing negative emotions such as fear, which would make the film nice and harsh, or of course, it could decrease the horror it slightly if they are too scared, or maybe have moved out of view (run away in fear, although they could simply have gone for a snack etc) to make it enjoyable by even the faintest of heart people, and of course increase the horror for those that seem calm. So even the most hardcore horror watcher could get frightened. It could be a bit like adaptive AI in games perhaps, yet without the negative connotations.
This would work by having lots of scenes and sections that can 'slot' together well in many combinations, and different shots and footage are shown depending the viewers facial expressions (and so hopefully emotion), and whether they chose the punishment or adaptive option outlined previously.
This would of course be rather costly to produce, and the editing would have to be undertaken very well to make sure that the film is coherent. Restrictions would have to be imposed on what footage can follow each other, being carefully chosen by preferably the director, using a specially designed software package.
A great thing about this is that it would bring the re-watchability of movies to a new level, and mean that even if one watches for example a horror film using this technology many times, it would still scare the crap out of you.
However, seeing that Hollywood often can't even manage to produce a decent standard film, without having to deal with 4 times more content and complex editing decisions, this could be rather difficult to implement.
Hmm, I feel that I may have gone into too much detail.
I don't actually like horror films that much; it just seems like a good genre to use for an example. However it could be used with comedy programs, especially sketch based ones, where the sketches or scenes from categories of types of humour etc that one laughs (or responds the most positively) to are shown. With sketches this would not require any of the complex editing from the horror example. I think it would be quite nice to have dynamic entertainment like this, rather than choosing the scenes oneself.
One other thing that this could do is allow a character to walk over to the screen inside the program being shown, and tap it, telling one to pay attention when one hasn't looked at the screen for a while, such as when falling asleep. Hmm, well I always wanted my screen to do that :)
I'll stop rambling now.
I actually wrote this before Tafkar made his post. You've got a point Rastus with "It's more an improvement of existing technologies than a ground breaking new technology."
I think that I thought far to small scale now, ahh well.
PS. If this post is bad, please excuse it, I was nakard when I typed it.