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 Brian Benben Dr. Sheldon Wallace Guest Star Sarah Drew Judy Guest Star Jeffrey Pierce Ray Daniels Guest Star Ione Skye Monica Daniels Guest Star Meredith Monroe Leah Hudley 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 Antonio Elias Collin Guest Star Kate Lacey Admitting Nurse Guest Star Shonda Rhimes Executive Producer Betsy Beers Executive Producer Marti Noxon Executive Producer Mark Gordon Executive Producer Mark Tinker Executive Producer Elizabeth Klaviter Writer Jeff Melman Director