neo_X7 said:

They killed animals to make that movie.
heh
no, that's just an urban legend. During the movie, you see a turtle getting disemboweled, but in fact, the turtle had been killed before (for turtle soup), they just made it look as if it was still alive when they began to rip it apart.
Cannibal Holocaust was the first "Blair Witch-esque" movie ever created. The theme is based on the story of an anthropologist who set out to find his fellow scientiests who disappeared in the "green hell" of the Amazonas rainforest, later on he finds out that they were eaten by cannibals and eventually gets eaten himself, together with his team mates.
The movie was filmed using hand cams and other low-tech stuff, so it looks quite real.
At first, the movie was announced as "real story" for marketing purposes, but as soon as ppl started to believe in that, the makers decidet to come up with the truth - to no avail. On the contrary, an European court forced Deodato and his fellows to come up with proof that one of the actors is still alive because of a very drastic and life-like death scene... idiots.
Needless to say the movie is banned in many countries due to lots and lots of blood, gore and sexual violence, even in the director's homeland Italy where a few lawyers unearthed and expanded a weird law that prohibits cruelty to guinea pigs (no joke) and thus managed to push it on the list of forbidden films.
There still are ppl who believe this movie to be true, or at least based on real footage... needless to say it's not, and if you read interviews with Ruggero Deodato, you will see that these suspicions always amused his team to no end.
Well... in a way, Cannibal Holocaust is a minor piece of movie history, albeit a nasty one which probably shouldn't be watched by sensitive ppl or those who aren't into splatter/gore.