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 Christopher Lowell William "Dell" Parker Actor Taye Diggs Dr. Sam Bennett Actor Amy Brenneman Dr. Violet Turner Actor Grant Show Dr. Archer Forbes Montgomery Guest Star Brian Benben Dr. Sheldon Wallace Guest Star Sarah Drew Judy Guest Star Susan Ruttan Nora Guest Star Joel Grey Dr. Alexander Ball Guest Star Jay Harrington Dr. Wyatt Lockhart Guest Star David Sutcliffe Officer Kevin Nelson Guest Star Kathy Christopherson Carrie Guest Star Jeffrey Doornbos Matt Guest Star Amy K. Harmon Tina Guest Star David Haley Andrew Guest Star Shonda Rhimes Executive Producer Betsy Beers Executive Producer Marti Noxon Executive Producer Mark Gordon Executive Producer Mark Tinker Executive Producer Jon Cowan Writer Robert Rovner Writer Allison Liddi-Brown Director