I, myself, was ministered to by his book "Loose that Man and Set Him Free", though I may not agree with his particular preaching style or personal excess.
"...anything virtuous lovely or of good report or praiseworthy, we seek after these things."
His books are praiseworthy, even if, perhaps (and we can't know for sure), he is doing it for money. But seeing interviews he has done, I believe he is sincere, if not a little caught up in the prosperity gospel craze.