I just wanted to say to people who don't go to the theater because they think people make too much noise: Go to a different theater.
I usually go to a theater that's fairly famous because of its location, and there is NEVER a problem with talking or noise. When I want to see it on IMAX, I have to go to a different complex, and that one is also very quiet.
If your theater is noisy, find a better theater. They are aren't all like that.