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 Ken Olin David Caplan Guest Star, Executive Producer Peter Gerety Dennis York Guest Star Jon Tenney Dr. Simon Craig Guest Star Daniel Oshionebo Evan McCallister Guest Star David Oshionebo Evan McCallister Actor Michael Hyatt Dr. Katherine Cortez Guest Star Tanner Maguire Henry Guest Star Jamison Jones Henry's Dad Guest Star Jay Karnes Roy Scovell Guest Star Khamani Griffin Alex Guest Star Hugh B. Holub The Judge Guest Star Matthew Kimbrough Professor James Gray Guest Star Jeryl Prescott Guest Star Jon Robin Baitz Executive Producer Marti Noxon Executive Producer Monica Owusu-Breen Writer Alison Schapker Writer Laura Innes Director