So, Meredith, what is this week's theme? "We go into medicine because we want to save lives. We go into medicine because we want to do good." Cristina is dancing awesomely in Mere's bedroom, something which I didn't realize until now I missed so much. It's totally reminiscent of the party from Season 1, in such a good way. VO adds, "We go into medicine for the rush. For the high." Cristina is shaking it -- kind of like I do when I'm alone in my apartment getting ready to go out for the evening, actually. Meredith leans on the doorframe, watching the show. Her disembodied voice continues, "For the ride."