Grey's Anatomy Previews: "Before and After"

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Thursday on a new Grey's Anatomy, the Private Practice crossover continues - and grows intense when Addison's brother's condition worsens. While she prays, Derek is called upon to perform a miracle and he isn't sure he can do it, as he tells Sam in the clip below:

[video url="http://www.greysanatomyinsider.com/videos/before-and-after-preview-4/" title="Before and After Preview #4"][/video]

Elsewhere, Lexie wants to be a public couple with Mark, who pokes fun at Bailey's new career plan. Follow the link for four more previews and more Grey's Anatomy spoilers!

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."

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."