This was definitely one of my favorite episodes. Throughout the series, I was wondering when you would get to see Dr. Cox's true emotions. When something bad happens, he usually reacts with sarcasm and lashes out. You always see him take the reins and take charge of the situation. Now, you see a different side to Dr. Cox. You see his vulnerability. His humanity. McGinley definitely locked in to it, and gave an amazing performance, especially in the last sequence. When that last patient died and he let out the anger and sadness he felt, even Carla looked frightened. When his eyes met J.D's that's when I cried. It takes a lot for an actor to convey true emotion just using their eyes. They looked sad, angry, guilty and ultimately...confused. I think that Braff also gave the best performance I had ever seen. For once, he wasn't off in la-la-land, he was a serious doctor, and it was great to see that.