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 Restaurant Manager Guest Star Chris Messina Reese Lansing Guest Star Mary McCormack Molly Levy Guest Star Kat Dennings Blair Lansing Guest Star Grace Gummer Hallie Shea Guest Star Jimmi Simpson Jack Spaniel Guest Star Paul Lieberstein Richard Westbrook Guest Star Christopher Nicholas Smith Randy Lansing Guest Star Derek Webster Rodger Hutchinson Guest Star Jane Fonda Leona Lansing Guest Star Riley Voelkel Jenna Johnson Guest Star Riccardo LeBron Waiter Guest Star Alan Poul Executive Producer Scott Rudin Executive Producer