In this scene from "The Becoming," Meredith prepares for an operation in her clinical trial with Derek. But what she's really thinking about is tongue.
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In this scene from "The Becoming," Meredith and Derek talk to the parents of their patients in their clinical trial.
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In this scene from "The Becoming," Meredith and Derek prepare for a serious operation in their clinical trial. Will they be able to repair their own lives?
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Meredith and Derek operate on the fake brain in preparation for their surgery.
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Preston Burke is back! Sort of. The doctor who left Seattle Grace has apparently won a prestigious award. How will Cristina Yang react?
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Grey's Anatomy Season 4 Episode 14 Quotes

I slept with her... and the whole time I was thinking of Meredith... who's the whore?

Derek

(to Meredith) If you want me to stay, I'll stay.

Derek