Addison isn't just back on Grey's Anatomy. She's married to Derek... at least in this unusual dream world/scenario.
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Grey's Anatomy viewers also have reason to smile on the episode "If/Then." Addison makes an appearance on the installment!
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Look who is returning on the Grey's Anatomy episode "If/Then." We get to see Addison back in Seattle Grace.
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Awww, remember when these two were good pals? We'll see them interact again on the Grey's Anatomy episode "If/Then."
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It's a team effort and a family affair on the Grey's Anatomy-Private Practice crossover event January 14, 2010. Can Sloane be helped when Mark and Addison join forces?
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Kate Walsh (Addison) is back on Grey's Anatomy, but still on Private Practice, of course. She stars on one Shonda Rhimes series after getting her start on the other.
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Mark and Addison in a photo from "Blink." A crossover event is totally in effect as Grey's Anatomy finally returns from its hiatus on January 14, 2010.
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Sometimes, the Grey's Anatomy cast is not enough. Someone from Private Practice needs to be brought in for expertise.
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Grey's Anatomy Quotes

When we say things like "people don't change" it drives scientist crazy because change is literally the only constant in all of science. Energy. Matter. It's always changing, morphing, merging, growing, dying. It's the way people try not to change that's unnatural. The way we cling to what things were instead of letting things be what they are. The way we cling to old memories instead of forming new ones. The way we insist on believing despite every scientific indication that anything in this lifetime is permanent. Change is constant. How we experience change that's up to us. It can feel like death or it can feel like a second chance at life. If we open our fingers, loosen our grips, go with it, it can feel like pure adrenaline. Like at any moment we can have another chance at life. Like at any moment, we can be born all over again.

Meredith

Callie: Did anyone ever think you two were a couple?
Meredith: No, because we screw boys like whores on tequila.
Cristina: Then we either try to marry them or drown ourselves.
Callie: Huh.