I love the movie previews... you know... Why is it whenever...

I love the movie previews... you know... Why is it whenever you're watching a movie preview you always feel like you have to comment on it to the person you're with? 'Yeah... I'm not gonna see that movie. I'm gonna wait for that on VIDEO.' I mean when you think about it, it's just a commercial for the movie. You know, you never sit at home watching tv-- "Yeah... I'm not buying that cereal. I don't like cereals with raisins in 'em. ...What's your take on that commercial? Where you goin'?