Trepanation (sometimes called trephination) is the surgical procedure of drilling holes in one's head for either medical or spiritual reasons. It has been found in numerous, disparate (as well as desperate) civilizations including the Mayan, the Egyptian, and the Sumerian.
There is a movement in Great Britain (dating back to the late 1960s) to reintroduce trepanation as a surgical procedure. In fact, some people have been trying to get it added to the National Health Service so that it would be covered by the government.
I liked the idea of having a thriller/action movie about someone who came and drilled holes in people's heads, hence "The Trepanator." The sub-text is funny, but obvious, which I usually like to avoid. Sometimes I just can’t help it.