Murderball

With alarming disregard for their remaining functioning limbs, wheelchair-bound quadriplegics smash into each other at high velocity in the opening of this kinetic documentary about a little-known sport and the men who play it.

This is one of those rare docs, like Hoop Dreams, where life provides a better ending than the filmmakers could have hoped for.

...this is a movie about jocks, with all their ardor and devotion to the sport on full display, as well as their fanaticism and some of the nastier aspects of competitive personalities.