it's true Spencer AbfallYou nailed it perfectly on the head.
  (why one would want to nail anything on its head, I don't know.
  Ah! A hammer wants to hit a nail on its head. Ok) - It is
  amazing how how we can see a movie, 24 pictures per second,
  mostly flat (photons are really thin - still 3D though) - and we
  see something that reminds us what a person looks like, and they
  are doing or saying certain... things. And we get feelings and
  react as if either: a) there is really a person right there and
  this is happening to them - or, more commonly b) we put
  OURSELVES in the hero's body and *we react* like we're
  underwater for example."