The latest craze in Hollywood doesn't come in a bottle, has nothing to do with weight loss and can't be snorted, videotaped, worn or dressed up in cutesy clothing.

It's Scientology, the high-profile religion that, depending on whom you talk to, is either the world's best chance at achieving peace or a bad science-fiction-novel-turned-cult that's turned Tom Cruise into a hyperactive zombie.

What everyone can agree on is that with antics like the "Mission: Impossible" star's infamous fit on Oprah's couch and subsequent anti-psychiatry rant on the "Today" show, the church that late pulp-fiction writer L. Ron Hubbard founded will probably be in the spotlight for a good long while.

What's less cut-and-dry is whether Scientology really does have a kung-fu grip on Tinseltown's jugular (including A-list stars like Jennifer Lopez), and if this is a dangerous thing.Scientology is the religion that Hubbard founded in the 1950s, centered around such concepts as reincarnation, the immortality of the soul (or, more precisely, something called the "thetan") and the idea that personal difficulties and ailments can be overcome with a series of mental and spiritual cleansings.