AS DEREK'S CONCERNS ABOUT THE CHIEF GROW, IZZIE RETURNS HOPING TO RECONCILE WITH HER HUSBAND, ALEX, ON ABC'S "GREY'S ANATOMY"

Guest Starring Kim Raver ("24," "Lipstick Jungle") as Teddy Altman

"I Like You So Much Better When You're Naked" � After learning of Richard's drinking problem, Derek confronts him for the sake of his friend and the hospital, Izzie returns, hoping to reconcile with Alex, and tensions run high between Teddy, Cristina and Owen in the aftermath of Cristina's startling confession, on "Grey's Anatomy," THURSDAY, JANUARY 21 (9:00-10:01 p.m., ET) on the ABC Television Network

"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, 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, Kevin McKidd as Owen Hunt and Jessica Capshaw as Arizona Robbins.

Guest starring Kim Raver as Teddy, other guest cast tba.

" I Like You So Much Better When You're Naked" was written by Tony Phelan & Joan Rater and directed by Donna Deitch.

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

For more information on "Grey's Anatomy," visit ABC.com.