King of Pain

It's here, going by the euphemism "Active-Denial Technology." The U.S. military has it, and a police department near you may be getting it soon. It's a very long-range (as in, hundreds of meters) weapon that inflicts what is described as unbearable pain by shooting microwaves that make the victim feel as if he/she's being burned (story, videos): http://blogs.smithsonianmag.com/smartnews/2013/05/police-could-soon-get-their-hands-on-the-u-s-militarys-pain-ray/