IMO you shouldn't even go into a big convo about a movie if you haven't seen it.

And that happens a lot around here. PTPers keep trying to give their rating off the trailer. If you haven't seen the movie, anything past "I don't want to see that" becomes unnecessary.

EDIT:
And there are people that actually DON'T want to be challenged by a film. I don't think that's wrong. If I want to sit down and watch something like Bad Boys 2 there's no reason for you to say something along the lines of "I don't know why anyone would want to see THAT". It's not like I'm peeling your eyelids back Clockwork Orange-style and forcing you to watch it.

I wonder how some of these people actually get entertained by anything.