Grey's Anatomy is a TV show.
Grey's Anatomy . The original cast consisted of nine star-billed actors : Pompeo , Sandra Oh , Katherine Heigl , Justin Chambers , T. R. Knight , Chandra Wilson , James Pickens Jr. , Isaiah Washington and Patrick Dempsey . Sandra Miju Oh ( born July 20 , 1971 ) is a Canadian actress known for her role as Dr. Cristina Yang on ABC 's medical drama Grey 's Anatomy , a role that earned her a Golden Globe , two Screen Actors Guild awards , and five nominations for Primetime Emmy Award for Outstanding Supporting Actress in a Drama Series .