By listened do you mean you're not looking at the screen, but it's playing anyway and you're getting a gist from the sounds? I can only do that with TV.
Maybe you'd like this site:
http://www.listentoamovie.com/media/index.php
I've watched movies without sound. I don't mean silent movies, I mean movies that have sound but I turn off the sound to watch the shots. And no I don't mean porn. My favorite experiment with this has been
Blue Velvet.