Vegas Week is proving a brutal environment for the acts competing to be a part of the 'America's Got Talent' (Tue., 8PM ET on NBC) live shows. But even the danger category couldn't compete with the dance category for injuries.

Two dance groups suffered them before their performances. In one case, a dancer twisted her ankle, but went on to perform. At Howie Mandel's behest, she went off to the hospital afterward. The situation was reversed for the group Fatally Unique.

One of their tricks is a collapsing pyramid, and one of the girls involved missed her mark with her hands and wound up bloodied and stunned. She headed to the hospital right away, only to return with a busted lip and fractured nose tip. But she wasn't going to let that stop her from competing.