netflix needs to add co-watching where you can join someone else's watching session in real time and comment/chat about it with them like is in the xbox 360 version.
My family does a sort of "ghetto co-watching" all the time, where they'll phone somebody up and say, "Hey, want to watch Foo? OK, start it playing … now!" I know lots of people who do that sort of thing. That's who co-watching is for — people who want to watch something together but not necessarily make a trip to somebody's house.