On one hand, it'd be cool to see how other people live. Really really cool.
On the other hand, being helpless is supposedly the worst thing in the world. And seeing without interfering sounds pretty helpless to me. The other option, of exerting control would feel pretty unethical. I've already lived my life- what right do I have to start controlling another person's?
So I have no idea. Is there a 30-day trial period option?