Today's topic for the 13 Days of Anime Halloween is this:
And my recommendation is....HELLSING!!!
It's a pretty awesome show: high action, high violence, vampire themed. There's lots of blood and gore and bloody limbs and pretty much anything you'd want from a gory anime. I'm sure there's ones that are more gory, but I wouldn't be able to get through them if they're much gorier than this!