Report: Two-Hour Grey's Anatomy Event to Begin Planned Kate Walsh Spinoff

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Although the plot is still shrouded in Shonda Rhimes-style secrecy, both TV Guide and Variety magazine have discovered some new dirt on the planned Grey's Anatomy spin-off, and how it may begin.

Report: Two-Hour Grey's Anatomy Event to Begin Planned Kate Walsh Spinoff
Variety says that "My Favorite Mistake," a two-hour Grey's Anatomy episode setting up an Addison Montgomery (Kate Walsh) spin-off, is scheduled to air this spring.

In addition to opening the door for Addison to possibly leave the halls of Seattle Grace, "My Favorite Mistake" will also introduce guest star Taye Diggs - as well as Hector Elizondo (Chicago Hope) as Callie's father.

The episode will be directed by Michael Grossman, who was last behind the camera for "Great Expectations" - the terrific episode in which both Burke and George popped the question to their respective ladies.

An exact air date for "My Favorite Mistake" has not been announced by ABC, but the episode will serve as the 22nd and 23rd Grey's Anatomy episodes (out of 24) in the current Season 3.

This is all very interesting news. Is the door also open for Addison to remain at Seattle Grace if viewer response to the episode is negative? Or is it a done deal that she's gone? Previous reports suggest the latter, but this makes it sound slightly less certain.

In any event, Grey's Anatomy returns with new episodes in two weeks, Thursday, March 15. That episode will be titled "Scars and Souvenirs."

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.


Grey's Anatomy Quotes

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)

MEREDITH: "You don't get to call me a whore. When I met you, I thought I had found the person that I was going to spend the rest of my life with. I was done! All the boys and all the bars and all the obvious daddy issues, who cares? I was done. You left me. You chose Addison. I'm all glued back together now. I make no apologies for how I chose to repair what you broke. You don't get to call me a whore."
DEREK: "This thing with us is finished. It's over."
MEREDITH: "Finally."
DEREK: "Yeah, it's done."
MEREDITH: "It is done."