Dave Annable Justin Walker Actor Maxwell Perry Cotton Cooper Whedon Actor Kerris Dorsey Paige Actor Sally Field Nora Holden Actor Calista Flockhart Kitty Walker Actor Balthazar Getty Thomas Walker Actor Rachel Griffiths Sarah Walker Actor Luke Grimes Ryan Lafferty Actor Luke Macfarlane Scotty Wandell Actor Rob Lowe Sen. Robert McCallister Actor Matthew Rhys Kevin Walker Actor Ron Rifkin Saul Holden Actor Emily VanCamp Rebecca Harper Actor Patricia Wettig Holly Harper Actor Gilles Marini Luc Laurent Guest Star Denzel Whitaker Carter Guest Star Joe Morton Peter Madsen Guest Star Christina Chang Professor Jane Condon Guest Star Chris Flanders Steve Guest Star Shelley Robertson Lynda Guest Star Leila Yavari Josette Guest Star Amy Aquino Dr. Joan Avadon Guest Star Ken Olin Executive Producer Jon Robin Baitz Executive Producer Marti Noxon Executive Producer Sarah Goldfinger Writer Michael Foley Writer Michael Morris Director