I was thinking that the Passion was a light wieght compared to We were Soldiers in terms of how many gallons of blood were used.

Then I realized that The Shining probably beat Mel.

Then I recalled a really whacko cult film where a guy kept trying to bury his mother who wouldn't die and the house was attacked by zombies.

Anyway just like some one has to be last on a threead there has to be the bloodiest movie.