Doctors live in a world of constant progress and forward motion. Stand still for a second, and you'll be left behind. But as hard as we try to move forward, as tempting as it is to never look back, the past always comes back to bite us in the ass. And as history shows us again and again, those who forget the past are doomed to repeat it. Sometimes the past is something you just can't let go of. And sometimes the past is something we'll do anything to forget. And sometimes we learn something new about the past that changes everything we know about the present.
When Owen recruits his fellow Iraqi War vet, Dr. Teddy Altman, as the new cardiothoracic surgeon, Cristina questions Teddy's abilities in the OR and the nature of their past relationship. Meanwhile, Izzie returns to Seattle Grace with her high school mentor seeking treatment for his dementia, and the stress of Richard's responsibilities, post-merger, are taking their toll.
This episode's title originated from the song New History, originally sung by Andy Davis.
This episode scored 14.87 million viewers.
At the beginning, Meredith is shown to know that Izzie had a teen pregnancy. However, the last time that subject was mentioned in the show was in the 3rd season and only George & Bailey knew about it.
When Cristina is doing the angioplasty and showing off her skills, her patient is Gary Clark and presents with ST Elevation and a blockage in the LAD (Left Anterior Descending). This may be the Gary Clark from Sanctuary, who shoots various doctors and in the end kills himself after losing his wife.
Bailey: Okay, I understand that you're under a tremendous amount of pressure right now, and that you haven't been able to spend time at home, and that a man, in your position has certain... needs, and that, when a man is as powerful and as attractive as you are, those needs might easily be met by...
Bailey: Your wife just showed up here asking me if you and I were having an affair. (The Chief goes to say something) No, no! I don't want to know anything about anything. What you do with your business, is your business. And I was not hitting on you.
Reed: Dr. Bailey? Do you mind if I scrub in on the Chief's ileostomy?
Bailey: Yes, I do mind. That man is old enough to be your father.
Bailey: No, uh-uh. You don't need to be seeing the Chief, either one of you. And doctors? If I find out that either one of you has said a word about this to anyone, I will make sure that you are the ones that require emergency surgery.
Izzie:(to Charles) You are the one that got me fired. You owe me this, you little bitch. Unless of course you want me to find that snotty Reed, what's her name? Tell her how much you love her, 'cause I will.
Cristina: Oh, that she's gotta go. I mean, he knows how important this is to me. I need someone who is gonna take me to the next level, and he brings me like this Desert Storm Barbie who hasn't seen the inside of an OR in like 10years? I mean, if this is what he thinks of my talent, I gotta break up with him.
Meredith: It's my first day back. I just wanted to have a normal lunch.
Cristina: Yeah, well take a look around. Nothing's normal.