T.R. Knight, who plays Dr. George O'Malley.
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The Grey's Anatomy star talked with the famous talk show host in January 2007.
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T.R. Knight, Isaiah Washington, Kate Walsh and Katherine Heigl have some fun after the Emmy Awards.
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T.R. Knight, from his recent Sesame Street appearance.
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T.R. Knight has his "I" on the case as a private detective on Sesame Street.
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The letter I, that is.
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The cast of Grey's Anatomy, circa Season Two.
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The cast of Grey's Anatomy, decked out in black.
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Grey's Anatomy Quotes

Amelia: I think I'm falling in love with Owen Hunt, and I'm really afraid that it's gonna destroy me.
Derek: It wouldn't be love if it didn't.

Did you say it? 'I love you. I don't ever want to live without you. You changed my life.' Did you say it? Make a plan. Set a goal. Work toward it, but every now and then, look around; Drink it in 'cause this is it. It might all be gone tomorrow."

Meredith (closing voiceover)