Here's a recent article from the online edition of the Brock Press about CrossFits. It's basic direction is that CrossFit workouts are really tough and challenging. It also provides some background about CrossFit and its founder. Good stuff.
Here's a sample of the article:
Crossfit is a completely radical way to think about training. It completely goes against modern theories and practices by targeting the deepest depths of human biology. Crossfit is a somewhat primal way to consider physical fitness; it attempts to mimic human evolution. Our ancestors did not drive to the grocery store to pick up their dinner; they had to walk and run and hunt in order to survive. They didn't have machinery to build things for them; they had to move everything by hand. In a time when it was survival of the fittest, our ancestors were exactly that; the fittest.
Crossfit is the brainchild of "Coach" Greg Glassman, a former gymnast. The program began in a single gym in Glassman's garage but word spread quickly after the launch of his Web site, crossfit.com in 2001. Coach Glassman, or simply Coach, prescribes a Workout of the Day (WOD) on the Crossfit Web site.