I'm highly skeptical of Billy Graham, too. I participated as a "counsellor" in one of his crusades, and millions of dollars were raised to bring the crusade to our town. Most of it was spent on salaries for his staff.
The attendence numbers were fudged (Each night there were about 5,000 to 8,000 people, but Graham's publicity claimed there were 30,000 to 35,000 each night), and the numbers of people "saved" were inflated (cards were received for 3,000 new believers, but Graham's PR staff reported something like 28,000 new believers). All but two of the people I talked to were already confessing Christians before the crusade. The other two just came to see what goes on at a crusade.
On follow up reports, only about 30 of the new believers were still going to church a year later. We raised $6 million to bring the crusade to town, and only 30 people made lasting commitments to Christ. Graham's people admit this is about average.
I can't help but feel if we had put even $3 million into a media campaign, it would have been a better investment than having a crusade.