I have found that with film, music or art, young people (or anyone really) have to be receptive before they're able to appreciate the experience. It just won't "click" if they're not ready. I've tried. I've tried to get youngsters excited about "the canon" of great cinema (yes, I consider John Carpenter to be on the short list for must-see horror films).

There's no easy way to encourage receptivity. The best thing you can do is to just be accessible when it happens and be ready to discuss.