To get past the creepiness aspect, let's say that you can only view what someone else is seeing. That's still pretty useful.

Imagine that you make this high enough resolution that it's like watching TV, and then small enough that it'll fit in a helmet.

Then, you could record what someone is seeing and hearing, without having a cameraman around. It would be a cool way to, for example, watch a football play from the eyes of the quarterback. It might be a very interesting way to make movies.