Special Guest Stars Chandra Wilson as Dr. Miranda Bailey James Pickens, Jr. as Dr. Richard Webber Patrick Dempsey as Dr. Derek Shepherd Eric Dane as Dr. Mark Sloan Justin Chambers as Dr. Alex Karev Guest Stars Grant Show as Dr. Archer Montgomery Abigail Spencer as Rachel Ben Shenkman as Rob Harmon Jennifer Westfeldt as Jen Harmon Steven W. Bailey as Joe Co Starring Jeffrey Nicholas-Brown as Andrew