As one might expect, Cristina can get fed up with Meredith's incessant Derek drama. When they fight, a giant icicle impales Cristina right in front of the hospital, though lucky her, there's the fine Dr. Owen Hunt in a G.I. Joe outfit right there to carry her to safety. The early season five episode deftly explores Cristina's friendship with Meredith while showing us the usually abrasive heart surgeon's softer side as she befriends Owen (way, way before he and Amelia became an item).
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