Eric's in a lot of pain but Derek and Cristina are both at a loss for any sympathy. Meredith seems more affected by his moaning and repeated questions about if anything is wrong with his legs. They say they didn't find anything in his legs, and then Mere and Cristina bicker about what kind of films to take. Hunt jumps in to say more films can't hurt, having no idea just how damning it will be that he's not immediately backing anything Cristina says. Derek warns Eric that they'll work more if he talks less, and Meredith calls his name with a warning tone. Eric says that Derek will warm up when they get to know each other, but Derek spits back that it's unlikely. Eric calmly tells him, "We're not that different, you and I," and explains, "People are alive when they meet us, and then that all changes somehow." I think the most telling thing about my feelings for Derek is that I let out a delighted chuckle at that line, as well as the blustery anger from Derek that he tries to control. Unfortunately I'm sure this means we will get yet another scene with him being upset at how many of his patients die, because the writers seem to think we don't really get it yet. Guys -- there's having a running theme, and then there's just doing the same thing over and over again and this angst with Derek is very much in the latter category now.
Mark's gazing at the surgical board when Lexie comes up and happily says hello. He turns and announces that he made one promise to his best friend and couldn't even stick to it, so despite how fantastic she is they are never going to hook up ever again. She agrees and leaves but even she doesn't seem totally torn up because come on, we all know Mark well enough to know that probably won't stick. He, however, looks incredibly tortured.