Aaron Sorkin Creator, Executive Producer Jeff Daniels Will McAvoy Actor Emily Mortimer Mackenzie McHale Actor John Gallagher Jr. Jim Harper Actor Alison Pill Margaret Jordan Actor Thomas Sadoski Don Keefer Actor Olivia Munn Sloan Sabbith Actor Dev Patel Neal Sampat Actor Sam Waterston Charlie Skinner Actor Marcia Gay Harden Rebecca Halliday Guest Star Chris Messina Reese Lansing Guest Star B.J. Novak Lucas Pruit Guest Star Clea Duvall Lilly Hart Guest Star Grace Gummer Hallie Shea Guest Star Jimmi Simpson Jack Spaniel Guest Star Brian Howe Barry Lasenthal Guest Star Keith Powell Wyatt Geary Guest Star Talia Balsam Toni Dodd Guest Star Chris Chalk Gary Cooper Guest Star Adina Porter Kendra James Guest Star Casey Sander Judge Cedarman Guest Star Alexander Bedria Priest Guest Star Margaret Judson Tess Westin Guest Star Thomas Matthews Martin Stallworth Guest Star Riley Voelkel Jenna Johnson Guest Star Katie Boeck Singer Guest Star Susie Abraham Mimi Tassler Guest Star Adrian Bustamante Zachary Webber Guest Star Sarah Benoit Veteran Journalist Guest Star Alan Poul Executive Producer Scott Rudin Executive Producer