FOR THE FIRST TIME THE DOCTORS OF SEATTLE GRACE AND OCEANSIDE WELLNESS WILL TEAM UP -- TO SAVE THE LIFE OF ONE OF THEIR OWN -- ON ABC'S "GREY'S ANATOMY"

Special Guest Stars from "Private Practice" Include Kate Walsh, Audra McDonald and Taye Diggs

Also Guest Starring Grant Show ("Melrose Place," "Swingtown") as Addison's brother, Archer, and Golden Globe-Nominated Actress Melissa George ("In Treatment," "Alias") as Sadie

"Before and After" � Addison, Naomi and Sam rush the ailing Archer to Seattle Grace and reunite with old friends Derek and Mark to help save his life; meanwhile, Izzie employs her fellow doctors in a medical game designed to help teach the interns, and Owen runs into a significant someone from his past, on "Grey's Anatomy," THURSDAY, JULY 16 (9:00-10:02 p.m., ET) on the ABC Television Network. (Rebroadcast: OAD: 2/12/09)

"Grey's Anatomy" stars Ellen Pompeo as Meredith Grey, Patrick Dempsey as Derek Shepherd, Sandra Oh as Cristina Yang, Katherine Heigl as Isobel "Izzie" Stevens, Justin Chambers as Alex Karev, T.R. Knight as George O'Malley, Chandra Wilson as Miranda Bailey, James Pickens, Jr. as Richard Webber, Sara Ramirez as Callie Torres, Eric Dane as Mark Sloan, Chyler Leigh as Lexie Grey, and Kevin McKidd as Owen Hunt.

Special guest stars are Kate Walsh as Addison, Audra McDonald as Naomi and Taye Diggs as Sam. Also guest starring are Grant Show as Archer, Jennifer Westfeldt as Jen, Ben Shenkman as Rob, Laura Allen as Beth, Sam Anderson as Michael, Steven W. Bailey as Joe, Brandon Scott as Intern Ryan with Melissa George as Sadie.

"Before and After" was written by Tony Phelan and Joan Rater and directed by Dan Attias.

"Grey's Anatomy" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound and Spanish audio via SAP. This program carries a TV-14,L parental guideline.

This episode of "Grey's Anatomy" will be available on ABC.com the day after airing on the network for users to watch online.