Combine it with x-ray vision, and it'd be fun! Or, at least, you could become a hitman who deals with superhuman threats. (A cookie for the person who gets that reference).
But I do agree with making sure that they'd be able to control it. I forget who said it, but when it comes to psychic powers, the real skill is not using the powers, but knowing how NOT to use 'em.
Just don't have the person do the Shawn Spencer "hand to head/passing a kidneystone-face" routine. It's been done to death.