Mary McCormack (Mary Shannon) previously worked with both guest stars Richard Schiff (Samuel Garfinkel) and Joshua Malina (Peter Alpert) on The West Wing (1999-2006). McCormack played Kate Harper, Schiff played Toby Ziegler and Malina played Will Bailey.
The guest stars Richard Schiff (Samuel Garfinkel) and Joshua Malina (Peter Alpert) previously worked together as part of the ensemble cast of The West Wing.