12/03/2008 AT 12:00 AM EST
Doctors from Seattle Grace and Oceanside Wellness Center may soon be racking up the frequent flyer miles.
A multi-episode crossover between Grey's Anatomy
and its spin-off Private Practice
is planned for February, and Grey
's star Sandra Oh
is talking about who's coming and who's going.
"Crossover crazy!" Oh said of executive producer Shonda Rhimes
's plans to cross-pollinate the casts of her two medical melodramas. Kate Walsh
's Dr. Addison Montgomery -- who split from Seattle Grace to launch the spin-off and made one return trip last spring -- is expected back in her old OR, and Oh revealed that Patrick Dempsey
's Derek Shepherd (a.k.a. McDreamy) will likely be trekking to his ex-wife's romantically complicated Oceanside Wellness Center. "It has to do with Addison," Oh said.
"I think the Chief is going to visit, too," she added, suggesting some unfinished business between Seattle Grace's head of staff (James Pickens, Jr.
) and Addison.
Oh has a suggestion for the writers in case they want to send her character to Ocean Wellness Center to hook up with a handsome doctor.
's character," she says. "Cristina Yang would have scenes with Cooper. They'd just wrestle the whole time!"
But back at Seattle Grace, Cristina already has a budding relationship with ex-military doc Owen Hunt, played by Kevin McKidd
. The pair shared a steamy kiss early on, but Oh likes that they haven't become an instant McCouple. "It's a nice, slow romance," she says. "A lot of time on Grey
's get together quickly, but that's not the case here. It's nice to be able to see a relationship develop and grow."
Oh also shrugs off critics of Grey
's occasionally polarizing plot lines, like the current romance
between Izzy (Katherine Heigl
) and the deceased Denny (Jeffrey Dean Morgan
"I'm very happy with my story lines and I work hard on them, and the other things you just can't control," she says. "If someone is going to hate my character or Cristina's romance with Owen, that's up to them. I know that myself and Kevin McKidd work really, really hard and putting in some rich work, and so that's all I concentrate on. -- Scott Huver