Actually I find $cientology to be useful in one respect.

When someone tells me that their, and only their, religion is "the absolute truth", and I respond with my opinion that they are all scams, I cite $cientology as an example.

Most people who know anything about it know that it is obviously a scam. So the argument goes, what if L. Ron Hubbard really did get it right, with all that Xenu stuff? Does that mean you should be at sea, on a ship, scrubbing the latrines with a toothbrush?

I've gotten at least a couple people to stop and think

Had a friend who checked it out when in our early 20's. It sounded like a ridiculous money grab then. I hope that series woke some people up.

Happens every day, in every church.