I'm watching UFC 48, and I just saw Tim Sylvia vs. Frank Mir. The replay appeared to clearly show Sylvia's arm breaking. I think I even remember Tim saying after the fact that his arm was broken. When it happened, Tim didn't even submit; the ref stopped it. Tim wanted to keep fighting, and denied that his arm was broken.
My question is: wtf was Tim on? What human being can have his arm broken, have no reaction, move it around, and want to continue fighting. Makes me wonder if Tim is just utterly insane, or if maybe he was using some sort of pharmaceutical.