Say Good-Bye to Christina....Anyone else still watching Grey's Anatomy? Maybe I am the only one... Sandra Oh's time at Grey Sloan Memorial has finally come to an end.  Her final episode of ABC's "Grey's Anatomy" aired Thursday night as the hit medical drama wrapped its tenth season.  Oh's character Christina shared a number of goodbyes during the episode, including two with best friend Meredith Grey, played by Ellen Pompeo.  The first was a tough-love goodbye as Meredith shoved Christina into a cab with tears in her eyes.  But Christina came back for a proper goodbye that included one last dance-it-out session.  Christina also shared an emotionally charged farewell with her ex Owen, played by Kevin McKidd, although they had to keep it wordless because he was on the other side of a window in the middle of surgery.  Oh was part of the "Grey's Anatomy" cast since the show began in 2005.  She won a Golden Globe and a Screen Actors Guild award for the role, and earned a total of five consecutive Primetime Emmy nominations.