Then again, maybe you don't :
"An eminent British neuro-surgeon has been performing complex brain operations using a £30 [ed: about $60] do-it-yourself cordless power drill at a clinic in Ukraine."
And because the Ukrainians (U-craniums?) are "very tough," the doc foregoes a general anesthetic, leaving the patient wide awake through the procedure.
In fairness, when the doc's back home, he uses a $60,000 pneumatic number, and (presumably), an anesthetic.
Or so we're told.
UPDATE: It appears that Dr Marsh may simply be reviving an ancient medical practice:
"Greek archaeologists believe a large hole in the skull of a third-century A.D. skeleton is rare evidence of ancient—and failed—brain surgery."
We certainly hope that Dr Marsh's patients enjoy better outcomes.