Determined to reverse Seattle Grace's slide into mediocrity, the chief lays down some new rules for interns and residents with which no one's happy. Derek asks Meredith for further changes in her living arrangements. Lexie challenges Cristina's diagnosis for a patient with a persistent headache, and the chief's preoccupation with reputation blinds him to problems with the physical plant.
Cast: Ellen Pompeo, Sandra Oh, Katherine Heigl, Justin Chambers, T.R. Knight, Chandra Wilson, James Pickens Jr., Sara Ramirez, Eric Dane, Chyler Leigh, Brooke Smith, Patrick Dempsey, Amy Madigan, Daniel J. Travanti, Jim Ortlieb