Kate Walsh Dr. Addison Montgomery Actor Tim Daly Dr. Pete Wilder Actor Audra McDonald Dr. Naomi Bennett Actor Paul Adelstein Dr. Cooper Freedman Actor Kadee Strickland Dr. Charlotte King Actor Brian Benben Dr. Sheldon Wallace Actor Caterina Scorsone Dr. Amelia Shepherd Actor Taye Diggs Dr. Sam Bennett Actor Amy Brenneman Dr. Violet Turner Actor JoBeth Williams Bizzy Forbes Guest Star Nicholas Brendon Lee McHenry Guest Star Ann Cusack Susan Grant Guest Star Annette O'Toole Janet Guest Star Cristian de la Fuente Dr. Eric Rodriguez Guest Star Jeanette Brox Lizzie Hagan Guest Star Meg Wolf Nancy Guest Star Marlon John Police Officer Guest Star Anne Leyden ICU Nurse Guest Star Shonda Rhimes Executive Producer Betsy Beers Executive Producer Mark Gordon Executive Producer Mark Tinker Executive Producer Craig Turk Executive Producer, Writer Steve Blackman Executive Producer, Writer Bethany Rooney Director