"GREY'S ANATOMY - ""What I Am"" - Addison doubts her abilities as a doctor, Cristina pushes Burke's rehabilitation, one of the interns suffers their own medical emergency, and Izzie receives the surprise of her life, on ""Grey's Anatomy,"" THURSDAY, OCTOBER 12 (9:00-10:01 p.m., ET) on the ABC Television Network. (ABC/GALE ADLER)PATRICK DEMPSEY, ELLEN POMPEO"
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