Celebs You Totally Forgot Guest-Starred on 'Grey's Anatomy'

Constance Zimmer

Season: 9
The Unreal actress played Alana Cahill, an advisor who tries to help the hospital avoid bankruptcy. The attempt fails, and Catherine Avery steps in to save it.

Christina Ricci

Season: 2
The Black Snake Moan actress played a paramedic who puts her hand inside a patient’s wound to stop the bleeding. She then realizes that she must keep her hand there or risk a bomb exploding.