GREY'S ANATOMY - "New History"- When Owen recruits his fellow Iraqi War vet, Dr. Teddy Altman, as the new cardiothoracic surgeon, Cristina questions Teddy's abilities in the OR and the nature of their past relationship. Meanwhile Izzie returns to Seattle Grace with her high school mentor seeking treatment for his dementia, and the stress of Richard's responsibilities, post-merger, are taking their toll, on "Grey's Anatomy," THURSDAY, NOVEMBER 12 (9:00-10:01 p.m., ET) on the ABC Television Network. (ABC/RANDY HOLMES) ELLEN POMPEO, SANDRA OH