Marilu Henner to Guest Star in GREY'S ANATOMY, 10/20

Lee Majors ("Six Million Dollar Man") and Marilu Henner ("Taxi") will both make guest appearances on the October 20 episode of "Grey's Anatomy" on ABC.

After being blackballed by most of the surgeons, Meredith uses Lexie to spark Derek's interest in her patient's rare brain tumor case and, in secret, gives guidance to April with Bailey's clinical trial in the special episode entitled "Poker Face".  In addition, Callie's wish for Arizona and Mark to form a friendship comes to fruition and she realizes it's more irritating than helpful; Alex and Teddy research alternative surgeries for a very superficial patient; and Callie and Cristina struggle with a very difficult spinal surgery.  The episode will air on Thursday October 20 (9:00-10:02 p.m., ET) on the ABC Television Network.

"Poker Face" was written by Peter Nowalk and directed by Kevin McKidd.

"Grey's Anatomy" stars Ellen Pompeo as Meredith Grey, Patrick Dempsey as Derek Shepherd, Sandra Oh as Cristina Yang, 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, Jessica Capshaw as Arizona Robbins, Kim Raver as Teddy Altman, Jesse Williams as Jackson Avery and Sarah Drew as April Kepner.

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

Marilu Henner originated the role of "Marty" in the Kingston Mines production of Grease in 1971, and reprised the role in the national touring company alongside John Travolta, who played "Doody". Additional Broadway credits for Henner include Over Here!, with Travolta, revivals of Pal Joey, Chicago, Social Security, and The Tale of the Allergist's Wife.

Her first film appearance was in the 1977 sleeper-hit Between the Lines, co-starring then-unknowns Jeff Goldblum, Lindsay Crouse, John Heard, and Jill Eikenberry. Her second role was opposite Richard Gere in the 1978 film Bloodbrothers. She is best known for her role as Elaine O'Connor Nardo on the sitcom Taxi from 1978 to 1983.