Tell It To Me Tuesday "Do Not Disturb"

Have you ever watched something only to have it haunt you for hours, days or even years later? Perhaps it was the subject matter itself, the way a particular event was depicted or a combination of the two.

Well today, I want to know the following...

What are the most disturbing films you have ever seen and what, in your opinion, made them so disturbing?

If you are participating on your blog, the rules are simple:

1. Answer this question ON YOUR BLOG and THEN link back to it via the box below.
2. Leave a comment letting me know you played along.
3. If you are interested in adding the box to your site, please visit Mister Linky.
4. If you have any questions or you're confused just ASK!