So, I'm watching Aliens right now, and reflecting on how awesome the marines' helmet cams are in terms of making a great scene when you are watching the aliens attack through them. I had thought about getting a helmet cam for airsoft and watched helmet cam airsoft footage on youtube. But today's helmet cams are too good compared to giant 1986 helmet cams. The field of view is much larger and you see too much. It's not like the very narrow field of view in Aliens that let's you only see what the user is focusing on. That makes it much more evocative in my opinion because you feel like you are the person.
I think the helmet cam footage from Aliens is better than the camera footage from Paranormal Activity in terms of really putting you in the scene.