Izzie and Cristina stalk over to the silent Mere and George and demand to know what's going on. Mere and George act guilty as hell, but they don't spill the goods. Rounds begin with a lovely middle-aged gentleman in a hospital bed (played by Mark Harelik, who I think I've seen in several Will & Grace episodes), whose fiancée is sitting by his side. Ann Cusack is playing the fiancée and I have a huge girl crush on her. So Ann is asking Mark what kind of flowers they should have at their wedding and they're humorously cute about their upcoming nuptials. Burke enters and Cristina explains that Mark had chest pains overnight, but has no history of heart disease in himself or his family. Ann says he's as healthy as a horse. Mere and George keep obviously not looking at each other, like, WAY TO DO YOUR JOBS, you infants.

Burke gently tells Mark that his x-rays show a large mass around his heart and Mark takes this news well, asking if "mass" is code for "tumor." Ann's immediately all up in Burke's business, saying that there's no way Mark can have a tumor because he's incredibly healthy. Burke ignores her and tells Mark he wants to do an angiogram as soon as possible, and Mark thinks this would be a fabulous idea. Everyone leaves and George corners Cristina, asking her if Meredith's said anything about anything to anyone. Cristina's like, no, and if you're not gonna spill, then to hell with you. George is like, well, good, because I didn't want to talk about it anyway! Cristina's like, want a bib with that pacifier? George is like, WAAAAAH. No, really. Coming down the hallway toward the Medicine Crüe is Addison, looking a bit twisted up and funky. She appears to be practicing her walk sample for entry into the Ministry of Silly Walks. The Medicine Crüe watches her curiously as she gimps away from them while tugging at her drawers.

We follow the Crüe to the next patient on rounds. It's a little boy and he's annoyingly cute and he has two dads and one dad is fine and calm and the other dad is a nervous nelly and no, I don't mean that in a derogatory sense, like, that's not meant as a gay bash or anything but really, while we're on the subject, Nervous Nelly dad is totally acting like a stereotype and Just Jack 2000 called and he wants his shtick back, okay? The little boy got hit in the head with a baseball and has been throwing up. Nervous Nelly Dad is, um, nervous, and indignant, and irritated at every baseball ever made, and Calm Dad is easy and humorous and he and the son gently make fun of the nervous dad for most of this scene. Derek asks Meredith what the possibilities are, and Mere rattles off a laundry list of potential dangers that aren't really sitting well with NND. I wasn't that fond of this storyline, as it really had nothing to do with anything else, so I think the less time spent on it the better, no?