I've listened to hundreds of hours. It is a great mental excercise to spot his myriad logical fallacies. I can't comment on "the truth" of much of what he says, except that when he happens to stray into my field of expertise where I absolutely can spot "the truth", he is usually full of sheet. Maybe he does better on other subject matter.

Shall we judge worth based on popularity? Most listened-to radio personality? It isn't Rush. It's Howard. (BTW I've listened to hundreds of hours of Howard as well).