Mary McDonnell to Guest Star on Grey's Anatomy

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In guest star news, actress Mary McDonnell of Battlestar Galactica is said to be in talks to appear in a multi-episode story arc on Grey’s Anatomy in Season Five.

Arepresentative for the medical drama confirmed this Monday. Grey's Anatomy is currently shooting its tenth episode, and if contracts are signed soon, as is expected, we assume Mary McDonnell will be in action, shooting scenes with the cast of the show shortly.

Mary McDonnell

Given that McDonnell’s episodes fall in the middle of the Grey’s Anatomy season, it’s not known whether they will air before or after the December break.

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

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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."

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."