God can use people to heal others. However, is it normative for God to do so? No. Is the gift of healing still in existence? No.
So any time we see somebody claiming to have the ability to heal people, they deserve far more scrutiny, not less.
As for Hinn, he's clearly a wolf who needs to be exposed for the fraud and false teacher he is.
It's been my experience that the false teachers are more likely to use television, because they put on a very visual show, while those preachers who are preaching the Word of God rightly are more apt to be found on radio because it involves the intellect and not the emotions.
And, of course, with the advent of the internet, there is a third choice. I've found that some of the best preachers are just local preachers who have no desire to be famous and use the internet, through streaming or podcasting because it's free and they don't have to ask for money.
In any event, whether we're talking about Benny Hinn on TV, John MacArthur on the radio, or Don Green or Mike Abendroth on the internet, the local church should always come first. Para-church ministries and other preachers should only be a suppliment to the preaching and teaching we get in the local church.