If you're expecting the sort of damning exposé you'll find on the Operation Clambake website, this isn't it. But if you don't know anything about Scientology, then it's a good place to start.
The trouble is, the scientologists have, predictably, exercised their legal muscle and have had the film taken down from everywhere it was available, so seeing it is not that simple. Fortunately, it is available to download in a somewhat lo-rez but still watchable version in a 3-part RAR archive, e.g. (ScientologyXenuTheBr.part1.rar) I won't tell you exactly where, but I will say that if you keep looking, you will surely find it, maybe even in a very well-known and large rapid filesharing repository.
The film itself is certainly not Oscar material, but is not a bad effort for a shoestring budget indy production. It does not ridicule Scientology, it just gives a couple of glimpses into what really goes on there. On that basis, it's a bit hard to see why the Scientologists got so upset, because, like I said, it's certainly no Operation Clambake. The opening clip of Ronnie Miscavige is obviously something they wouldn't want to be spread around, but it's really something that anyone who's only seen Scientology's PR spin should see. If nothing else, you will see that the notion of Scientology as a religion is a total sham. It is a cult, and not a nice one.