Leighton in 17 Photos

Cristina Yang (Sandra Oh) hides from Mrs. Burke (Diahann Carroll). But we have a hunch that it's not going to work out that easily.

Lexie Grey (Chyler Leigh) is a new intern at Seattle Grace. So are those other peeps, but we're most concerned with the girl threatening to break up our MerDer love.

Unfortunately for fans of Preston Burke (Isaiah Washington) and Cristina Yang (Sandra Oh) it was not to be in the Season 3 finale of Grey's Anatomy, "Didn't We Almost Have it All."

George O'Malley is a lovable guy... but he could stand to be a little more assertive.

Miranda Bailey will have to pick up the pieces and move on after unexpectedly losing out to Callie Torres for the role of Chief Resident.

Addison calls him out on his crap!

George couldn't even muster any words after what Izzie said to him.

Izzie professes her feelings for George.

Will she be? Not this season.

Preston drops a shocking piece of knowledge on Cristina. He's leaving.

For Richard and Adele.

There's only one Dr. Richard Webber, Chief of Surgery.