GREY'S ANATOMY - &quot;Didn't We Almost Have It All&quot; - Cristina and Burke's wedding day arrives - along with the interns' first exam results - and a successor to the Chief is named, as Callie and George make a big decision about their relationship, on the Season Finale of &quot;Grey's Anatomy,&quot; THURSDAY, MAY 17 (9:00-10:07 p.m., ET) on the ABC Television Network. (ABC/SCOTT GARFIELD)ELLEN POMPEO, SANDRA OH
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