Addison isn't just back on Grey's Anatomy. She's married to Derek... at least in this unusual dream world/scenario.
Added:
Grey's Anatomy viewers also have reason to smile on the episode "If/Then." Addison makes an appearance on the installment!
Added:
Look who is returning on the Grey's Anatomy episode "If/Then." We get to see Addison back in Seattle Grace.
Added:
Awww, remember when these two were good pals? We'll see them interact again on the Grey's Anatomy episode "If/Then."
Added:
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?
Added:
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.
Added:
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.
Added:
Sometimes, the Grey's Anatomy cast is not enough. Someone from Private Practice needs to be brought in for expertise.
Added:

Grey's Anatomy Quotes

We're all going to die. We don't get much say over how or when, but we do get to decide how we're gonna live. So, do it. Decide. Is this the life you want to live? Is this the person you want to love? Is this the best you can be? Can you be stronger? Kinder? More Compassionate? Decide. Breathe in. Breathe out and decide.

Richard

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)