The most shocking horror film i've ever seen...
 

August Underground...

http://imdb.com/title/tt0412467/

I've seen 100's of horror movies, but this 'tops' it all.
It's a simulated snuff movie, filmed amateurish (on purpose)... It looks so realistic, it's extremely shocking and scary.
I read the second movie in this series is even more disturbing (http://imdb.com/title/tt0410332/)

If you think you're tough because Saw or Hostel doesn't do anything to you, try and see if you can stand this one. (I'd not recommend it though, I turned it off after 20 minutes of watching)
This movie takes horror to a whole new level, which is just over the top.

I was actually kinda bored by it...
I can see where it would be shocking, but to me, it just seemed like an amateurish excuse to toss around a bunch of blood...not something I'm normally against, mind you...it just felt like they were trying too hard...

The most shocking horror film was Deep Throat

Hmm..Checked out some youtube stuff...Nothing stood out as too shocking. if anything, it was a bit boring. :(

"An Inconvenient Truth"

Id rather watch Guinea Pig...

I have not seen Guinea Pig, nor am I a great fan of the genre...
But Id like to see Guinea Pig just to see if its as 'bad' (or as realistic) as they say it is...

Anyone here seen Guinea Pig?

Hostel or Saw are no measure of how well someone can tolerate horror ... try some of those Japanese flicks like Audition. But I get your point :)