Grey Sloane Memorial has had its share of special guests! Welcome to MsMojo, and today we’re looking at the famous “Grey’s Anatomy” guest stars that may have slipped your memory. Our countdown includes stars Mandy Moore, Theo Rossi, Christina Ricci and more! Beware of spoilers ahead! Did we miss any of your favorite stars who guest-starred on “Grey’s”? Let us know in the comments.

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