What do you get when you cross boxing, aikido, Greco-Roman wrestling, and more than 25 other fighting styles? If you answered Ultimate Fighting Championship, you're correct (if you answered by cowering under a desk, we don't blame you). This is not some soap opera of thrown chairs and unrealistic moves. Two fighters and a referee enter the Octagon--the UFC's caged, eight-sided ring--where the fighters meld martial-arts styles to receive points for hits, holds, and takedowns.