One of the best things about the Lord of the Rings film trilogy is how the film makers brought orcs to life. I think even Tolkien who gave such a precise description of the orcs couldn’t have done them better. The orcs in the films are hideous and disgusting, but the scariest are their voices.
This gives me goose bumps. That is why I skip the orc-ish parts of the films. I can watch them, but hearing them makes me want to run and hide into a hobbit hole.