| Dulé Hill as | Charlie (Charles) Young | Deputy Special Assistant to the Chief of Staff |
| Allison Janney as | C.J. (Claudia Jean) Cregg | Chief of Staff |
| Joshua Malina as | Will (William) Bailey | Communications Director |
| Mary McCormack as | Kate (Katherine) Harper | Deputy National Security Advisor |
| Richard Schiff as | Toby (Tobias Zachary) Ziegler | Former Communications Director |
| with Jimmy Smits as |
Matthew Vincente Santos | President-Elect |
| Special Guest Star Timothy Busfield as |
Danny (Daniel) Concannon | Washington Post Reporter |
| Guest Starring | ||
| Kathleen York as | Rep. Andy (Andrea) Wyatt | Congresswoman |
| NiCole Robinson as | Margaret Hooper | Assistant to Chief of Staff |
| Karis Campbell as | Ronna Beckman | Santos' Aide |
| Vince Grant as | Gil Silverly | Department of Education |
| Scott Klace as | DCCC | meeting with Will |
| Matt Malloy as | Herb | |
| David Hornsby as | Fred | |
| and Xander Berkeley as |
Franklin "Frank" Hollis | |
| Co-Starring | ||
| Alexandra Ryan as | Receptionist | Santos Transition |
"We'll have episodes at the end where we'll follow (chief of staff) C.J. Cregg (Allison Janney) and see what is happening in her life....
"We have to work around (Busfield's) schedule because he's very involved (as a producer-director) with "Without a Trace.' We're trying to follow through on it. We talked about it long and hard over the summer." - John Wells
"'West Wing' deals with its final days"
by Alan Pergament
January 25, 2006
Buffalo News
Sorkin and Busfield are so close that when a "West Wing" shake-up occurred in the show's fourth season, and Sorkin left the fold, "That was pretty much the end of the show for me," says Busfield. "There wasn't a whole lot of Danny again until the last season, when they figured they sort of needed me to finish Danny's story with Allison Janney. They needed to give Allison something to do," he says, as he refers to his character's love story with the character played by Janney, which finally reached a culmination in the series' swan-song episode.
"Busfield quick to get on board with "Studio 60""
by Marilyn Beck and Stacy Jenel Smith
July 31, 2006
Los Angeles Daily News
Richard Schiff confesses he wasn't sad when The West Wing came to an end after seven years.All that time playing White House communications director Toby Ziegler was more than enough.
"I don't want to feel like a puppet ever again, and at times on West Wing I felt like a puppet. We all did," he says from his Los Angeles home.
"It's unavoidable on a network TV show when you're pushing out 22 little movies a year.
"You feel kind of used and abused, but you're being paid this ridiculous amount of money and getting all this fame and free golf clubs and stuff.
"It's very seductive, but there comes a time when you want to move on."
"Schiff's back in control"
by Robert Fidgeon
August 23, 2006
Herald-Sun
Were you sad to say goodbye to The West Wing?Not at all - I'd had my fill. I was actually ready to move on some time before it finished, but they kept giving me more money so it became hard to walk away! I loved it and I loved the people involved in it, but I think it was right that it ended when it did. - Richard Schiff
"Talking Shop: Richard Schiff"
February 7, 2007
bbc.co.uk