Grey's Anatomy

Thursdays 9:00 PM on ABC

Grey's Anatomy's upcoming Season 6 finale will feature a famous face: Mandy Moore.

The 25-year-old singer-actress will play Mary, a patient being treated by Bailey (Chandra Wilson) in the show's much-anticipated May 20, game-changing finale.

Sources said Moore is just one part of the kind of finale that executive producer Shonda Rhimes loves keeping under wraps, so no further details are available yet.

Any theories are welcome below!

Are you excited to see Mandy Moore on Grey's Anatomy?

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.

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Grey's Anatomy Quotes

COOPER: "It's wrong?"
NAOMI: "You need to meet a grown up. You need to date someone your own age."
VIOLET: "Someone without a porny internet name and perhaps no criminal past."
NAOMI: "A nice girl."
VIOLET: "A reliable girl."
NAOMI: "Someone who you can have a relationship with."
VIOLET: "You’re a respected doctor."
NAOMI: "Go out in the real world. Meet a woman your own age and go out."
VIOLET: "Be a man."

Permalink: It's wrong? You need to meet a grown up. You need to date som...

Added: May 24, 2007

ADDISON: "You work with your ex-husband in a shrine for your ex-husband."
NAOMI: "It’s actually a good book. And we're friends. And we stayed friends after we divorced. It’s very healthy. We're healthy."
ADDISON: "What happened between you and Sam?"
NAOMI: "Addison, you and I were close in med school, but it was a long time ago."
ADDISON: "Oh, Naomi. Come on. You can’t stay mad at me forever. I know you."

Permalink: You work with your ex-husband in a shrine for your ex-husband. ...

Added: May 24, 2007