Thursday's Grey's Anatomy marks the debut of yet another new cast member, Kim Raver as Dr. Teddy Altman, an old friend of Owen's from the Iraq war and the new cardio god at Seattle Grace-Mercy West. Suffice it to say, Cristina is going to love her!

Elsewhere, Izzie returns to Seattle Grace with her high school mentor, who is seeking treatment for his dementia, and the stress of Richard's job starts to take an even bigger toll.

Click to enlarge some pictures from the episode, "New History" ...

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