WARNING: The above video will most likely freak you out. And if it doesn't, just go ahead and commit yourself at the nearest loony bin, since that's where you should most definitely be.
Decapitations can be a part of your Skyrim experience, provided you unlock the right perk in either the One-Handed or Two-Handed skill categories. One player took this ability to a very disturbing extreme. I'll let the video speak for itself, largely because I'm worried about what the video's creator might do to me if I happen to say something negative. Thanks to Destructoid for finding this insane piece of Internet.