In the only sport with script writers, composers, costume designers and directors, professional wrestling is unabashedly just pure show business. It's a spectacle that P.T. Barnum would have loved to own. After the WWF's recent IPO, you can even buy a piece of it yourself.

Barry W. Blaustein's documentary, BEYOND THE MAT, takes a loving but honest look behind the curtain to show us how this bizarre piece of entertainment is operated. The "sport" is so popular that the documentary about it is getting released to commercial theaters rather than art houses, something relatively unheard of in the world of docs.

Make no mistake, however, about wrestling. It is a dangerous endeavor. The blood you see is real, as the combatants do such things as take metal chairs and pulverize their opponents' heads. These willing victims get their bodies beat to a pulp up to 10 times a week. The pain is no less intense because it is carefully scripted. From the times of the Romans, we know that there has always been a market for watching people being subjected to such incredible abuse.

Blaustein's documentary is hilarious -- frequently frighteningly funny. The performers go for maximum camp and their interviews off-stage are completely off the wall.

Most of the stars or would-be stars of the WWF have some schtick in order to stand out. Jake the Snake, as you might guess, has his monstrous snakes that he brings along.

One newcomer has a skill that impresses the CEO of the WWF, which is still a family business even though it's publicly traded. The wrestler, who is given the new stage name of Puke, is able to regurgitate on cue.

"But, what if you weren't born with the skill of projectile wrestling?" Blaustein asks rhetorically. The answer? You pay someone to train you in wrestling techniques, although your chances of hitting the big time are extremely slim.

The film, which is mesmerizing in the first thirty minutes, quickly runs out of ideas. As fascinating as the first part is, the rest of the movie is way too repetitive.

Some segments have no resonance. Typical of these is the one about Jake the Snake, a crack addict, trying to relate to his abandoned, now grownup daughter. We can be sorry for her, but the inclusion of the material just feels awkward.

Still, the first part of the film is more than worth the price of admission. Actually watching 30 minutes of it and then walking out wouldn't be a bad strategy. You would have great fun, and staying will not add much.

BEYOND THE MAT runs too long at 1:42. It is rated R for strong violence and language and would be acceptable for older teenagers. (Young kids, including those of the contestants who are beaten up, can and do go to the matches, something that I find shocking. Of course, shocking is what pays the bills at the WWF.)