| Allison Janney | Claudia Jean 'C.J.' Cregg (154 episodes, 1999-2006) |
| John Spencer | Leo McGarry / ... (154 episodes, 1999-2006) |
| Bradley Whitford | Josh Lyman (154 episodes, 1999-2006) |
| Martin Sheen | President Josiah 'Jed' Bartlet / ... (154 episodes, 1999-2006) |
| Janel Moloney | Donna Moss (149 episodes, 1999-2006) |
| Richard Schiff | Toby Ziegler (144 episodes, 1999-2006) |
| Dulé Hill | Charlie Young (136 episodes, 1999-2006) |
| NiCole Robinson | Margaret Hooper / ... (105 episodes, 1999-2006) |
| Melissa Fitzgerald | Carol Fitzpatrick / ... (100 episodes, 1999-2006) |
| Rob Lowe | Sam Seaborn (82 episodes, 1999-2006) |
| Joshua Malina | Will Bailey (80 episodes, 2002-2006) |
| Stockard Channing | Abbey Bartlet (68 episodes, 1999-2006) |
| Kim Webster | Ginger / ... (57 episodes, 1999-2006) |
| Kris Murphy | Katie Witt / ... (52 episodes, 1999-2005) |
| Timothy Davis-Reed | Mark O'Donnell / ... (51 episodes, 2000-2006) |
| Mary McCormack | Kate Harper (48 episodes, 2004-2006) |
| William Duffy | Larry / ... (47 episodes, 1999-2006) |
| Peter James Smith | Ed / ... (45 episodes, 1999-2006) |
| Renée Estevez | Nancy (43 episodes, 1999-2006) |
| Charles Noland | Reporter Steve / ... (43 episodes, 1999-2006) |
| Devika Parikh | Bonnie (41 episodes, 1999-2003) |
| Jimmy Smits | Matthew Santos (37 episodes, 2004-2006) |
| Kristin Chenoweth | Annabeth Schott (34 episodes, 2004-2006) |
| Lily Tomlin | Deborah Fiderer (34 episodes, 2002-2006) |
| Mindy Seeger | Chris / ... (34 episodes, 1999-2005) |
| Kathryn Joosten | Mrs. Landingham / ... (30 episodes, 1999-2002) |
| Timothy Busfield | Danny Concannon (28 episodes, 1999-2006) |
| Alan Alda | Senator Arnold Vinick (27 episodes, 2004-2006) |
| Ivan Allen | News Anchor Roger Salier / ... (27 episodes, 1999-2006) |
| Elisabeth Moss | Zoey Bartlet (25 episodes, 1999-2006) |
| Mary-Louise Parker | Amy Gardner (23 episodes, 2001-2006) |
| Moira Kelly | Mandy Hampton (22 episodes, 1999-2000) |
| Karis Campbell | Ronna (22 episodes, 2004-2006) |
| John Amos | Percy Fitzwallace (21 episodes, 1999-2004) |
| Gary Cole | Vice President Bob Russell (21 episodes, 2003-2006) |
| Anna Deavere Smith | Nancy McNally (20 episodes, 2000-2006) |
| Randy Brooks | Arthur Leeds / ... (20 episodes, 2000-2005) |
| Tim Matheson | Vice President John Hoynes / ... (19 episodes, 1999-2006) |
| Ron Silver | Bruno Gianelli (18 episodes, 2001-2006) |
| Teri Polo | Helen Santos (18 episodes, 2005-2006) |
| Marlee Matlin | Joey Lucas (17 episodes, 2000-2006) |
| Steve Ryan | Secretary of Defense Miles Hutchinson (16 episodes, 2003-2006) |
| Matthew Del Negro | Bram Howard (16 episodes, 2005-2006) |
| Michael O'Neill | Secret Service Agent Ron Butterfield (16 episodes, 1999-2006) |
| Janeane Garofalo | Louise Thornton (15 episodes, 2005-2006) |
| Kathleen York | Andrea Wyatt (15 episodes, 2000-2006) |
| Bill O'Brien | Kenny Thurman (15 episodes, 2000-2005) |
| Thomas Kopache | Assistant Secretary of State Bob Slatterly (14 episodes, 2001-2005) |
| Bradley James | Secret Service Agent Donnie / ... (13 episodes, 1999-2005) |
| Penny Griego | Anchor #2 / ... (13 episodes, 1999-2006) |
| Aaron Michael Lacey | Secret Service Agent / ... (13 episodes, 2001-2006) |
| Emily Procter | Ainsley Hayes (12 episodes, 2000-2006) |
| Jana Lee Hamblin | Bobbi / ... (12 episodes, 1999-2002) |
| Ron Ostrow | Reporter John / ... (12 episodes, 2002-2005) |
| Brian Dragonuk | Mourner at Cathedral / ... (12 episodes, 2000-2006) |
| Allison Smith | Mallory O'Brien (11 episodes, 1999-2006) |
| Thomas M. Hagen | News Cameraman / ... (11 episodes, 2000-2004) |
| Ron Canada | Under Secretary of State Theodore Barrow (10 episodes, 2003-2006) |
| Ramon De Ocampo | Otto (10 episodes, 2005-2006) |
| Joyce Guy | Reporter Charlayne / ... (10 episodes, 2003-2006) |
| Ralph Meyering Jr. | Tom / ... (10 episodes, 2000-2003) |
| Jesse Bradford | Ryan Pierce (9 episodes, 2003-2004) |
| Suzy Nakamura | Cathy (9 episodes, 1999-2000) |
| Patricia Richardson | Sheila Brooks (9 episodes, 2005-2006) |
| Steven Culp | Speaker of the House Jeff Haffley (9 episodes, 2003-2005) |
| Stephen Root | Bob Mayer (9 episodes, 2005-2006) |
| Nina Siemaszko | Ellie Bartlet (9 episodes, 2001-2006) |
| Glenn Morshower | Mike Chysler (9 episodes, 2001-2002) |
| Tom Chick | Reporter Gordon / ... (9 episodes, 2003-2005) |
| Oliver Platt | White House Counsel Oliver Babish (8 episodes, 2001-2005) |
| Clark Gregg | FBI Special Agent Michael Casper (8 episodes, 2001-2004) |
| Sam Robards | Greg Brock (8 episodes, 2004-2005) |
| Danica McKellar | Elsie Snuffin (8 episodes, 2002-2003) |
| Gregory Alan Williams | Robbie Mosley (8 episodes, 2000-2002) |
| Evan Arnold | Ned (8 episodes, 2004-2005) |
| Diana Maria Riva | Edie Ortega (8 episodes, 2005-2006) |
| Ben Siegler | Reporter George / ... (8 episodes, 2003-2005) |
| Chaz Fatur | Secret Service Agent (8 episodes, 2005-2006) |
| Mark Feuerstein | Sen. Maj. Counsel Cliff Calley / ... (7 episodes, 2001-2005) |
| Terry O'Quinn | General Nicholas Alexander (7 episodes, 2003-2004) |
| Ryan Cutrona | CIA Director George Rollie / ... (7 episodes, 2000-2005) |
| Melissa Marsala | Rina (6 episodes, 2003-2004) |
| Michael Hyatt | Angela Blake (6 episodes, 2003-2004) |
| H. Richard Greene | Senator Robert Royce, R-PA / ... (6 episodes, 2001-2005) |
| Trent Ford | Jean Paul (6 episodes, 2002-2003) |
| Annabeth Gish | Elizabeth Bartlet Westin (6 episodes, 2003-2006) |
| John Aylward | Barry Goodwin - Former DNC Chair / ... (6 episodes, 2005-2006) |
| Victor McCay | Henry / ... (6 episodes, 2000-2003) |
| Annie Morgan | Annie / ... (6 episodes, 2005-2006) |
| Paul Moncrief | Core Staffer / ... (6 episodes, 2000-2001) |
| Lisa Edelstein | Laurie (5 episodes, 1999-2000) |
| Roger Rees | Brit. Ambassador Lord John Marbury / ... (5 episodes, 2000-2005) |
| Jorja Fox | Agent Gina Toscano (5 episodes, 2000) |
| Joanna Gleason | Atty. Jordon Kendall / ... (5 episodes, 2001-2002) |
| Brett Cullen | Governor Ray Sullivan R-WV (5 episodes, 2005-2006) |
| Steven Eckholdt | Doug Westin (5 episodes, 2003-2006) |
| Jeff Mooring | Reporter Phil (5 episodes, 2001-2003) |
| Rick Cramer | Officer / ... (5 episodes, 2001-2003) |
| Rebecca Avery | Aide / ... (5 episodes, 2003-2005) |
| J.P. Stevenson | Jonathan / ... (5 episodes, 1999-2001) |
| Thomas Spencer | Military Aide Thompson / ... (5 episodes, 2000-2005) |
| Makram Khoury | Palestinian Chairman Nizar Farad (5 episodes, 2004) |
| Adam Arkin | Dr. Stanley Keyworth (4 episodes, 2000-2002) |
| Mark Harmon | Agent Simon Donovan (4 episodes, 2002) |
| Armin Mueller-Stahl | Israeli Prime Minister Efraim 'Eli' Zahavy (4 episodes, 2004) |
| Connie Britton | Connie Tate (4 episodes, 2001) |
| Ed O'Neill | Governor Eric Baker D-PA (4 episodes, 2004-2005) |
| Dennis Cockrum | Officer / ... (4 episodes, 1999-2002) |
| Melinda McGraw | Jane Braun (4 episodes, 2006) |
| J. Patrick McCormack | General Jimmy Wendall (4 episodes, 2003-2006) |
| Ben Murray | Curtis Carruthers (4 episodes, 2004-2005) |
| Diana Morgan | Jesse / ... (4 episodes, 1999-2002) |
| Victor Love | Mike / ... (4 episodes, 1999-2000) |
| Becky Meister | Reporter Sally / ... (4 episodes, 2002-2005) |
| Thomas B. Hall | Officer / ... (4 episodes, 2000-2001) |
| Willie Gault | Agent #2 / ... (4 episodes, 2000-2004) |
| Andrew McFarlane | Anthony Marcus / ... (4 episodes, 2002) |
| Jacqueline Torres | Reporter #1 / ... (4 episodes, 1999-2001) |
| Molly Schaffer | Staffer / ... (4 episodes, 1999-2001) |
| Robyn Pedretti | Candy / ... (4 episodes, 1999-2001) |
| S.E. Perry | Marine Officer / ... (4 episodes, 2002) |
| Richard Saxton | Alan / ... (4 episodes, 2000-2002) |
| Marvin Krueger | Officer #1 / ... (4 episodes, 1999-2001) |
| Joshua Cabrera | Peter Santos (4 episodes, 2006) |
| Juan A. Riojas | Secret Service Agent / ... (4 episodes, 1999-2000) |
| Gary Carlos Cervantes | Bobby / ... (4 episodes, 2000-2001) |
| John Goodman | Acting President Glenallen Walken / ... (4 episodes, 2003-2004) |
| Daniel Ferro | FBI Agent / ... (4 episodes, 2001-2003) |
| David Garrison | Mike Diacovo - MSNBC Talking Head (4 episodes, 2005-2006) |
| Matthew Perry | Joe Quincy (3 episodes, 2003) |
| Jay Mohr | Taylor Reid (3 episodes, 2004) |
| Jason Isaacs | Colin Ayres (3 episodes, 2004) |
| Christian Slater | Lt. Cmdr. Jack Reese (3 episodes, 2002) |
| Thom Barry | Congressman Mark Richardson (3 episodes, 1999-2003) |
| Charley Lang | Congressman Skinner (3 episodes, 1999-2000) |
| Mary Kay Place | Surgeon General Millicent Griffith (3 episodes, 2001-2004) |
| Evan Handler | Douglas Wegland (3 episodes, 2001) |
| Reed Diamond | Dr. Mike Gordon (3 episodes, 2004-2005) |
| Ted McGinley | Mark Gottfried (3 episodes, 2000-2001) |
| Brian Kerwin | Ben Dryer (3 episodes, 2004) |
| Geoff Pierson | Senate Minority Leader Tripplehorn (3 episodes, 2002-2003) |
| Claire Coffee | Cassie Tatum (3 episodes, 2003) |
| Tom Everett | Agent Charles Frost (3 episodes, 2005) |
| Benjamin Brown | Mike / ... (3 episodes, 2003-2005) |
| Natalia Nogulich | Israeli Ambassador Shira Galit (3 episodes, 2004) |
| Ben Weber | Vic Faison - Ellie's Fiancé (3 episodes, 2005) |
| Lee Garlington | Alana Waterman (3 episodes, 2003-2006) |
| Andy Umberger | Stevie / ... (3 episodes, 1999-2003) |
| Marcelo Tubert | Palestinian Prime Minister Saeb Mukarat (3 episodes, 2004) |
| Tim Lounibos | Colonel Leahy (3 episodes, 2004) |
| Charlotte Colavin | Representative Sheila Fields (3 episodes, 2003-2004) |
| Ashlyn Sanchez | Miranda Santos (3 episodes, 2006) |
| David O. Katz | Assistant / ... (3 episodes, 2001-2003) |
| Caroline Duncan | Reporter #3 / ... (3 episodes, 2005-2006) |
| Greg Wrangler | Secret Service Agent / ... (3 episodes, 1999-2001) |
| Ernie Lively | Mr. Loch / ... (3 episodes, 2000-2005) |
| Elizabeth Liang | Staffer (3 episodes, 2001-2002) |
| Lara Phillips | Lauren Romano (3 episodes, 2003) |
| Saida Pagan | Anchor / ... (3 episodes, 2004-2005) |
| David St. James | Congressman Darren Gibson, R-MI / ... (3 episodes, 2001-2005) |
| Emiko Parise | Abbey's Aide #1 / ... (3 episodes, 2001-2002) |
| Kimberlee Peterson | Lauren Shelby (3 episodes, 2003) |
| Nicole Lyn | Intern Stacy (3 episodes, 2002-2003) |
| Carol Avery | Congresswoman Gleeson / ... (3 episodes, 2004-2005) |
| Christopher Kriesa | Mitch / ... (3 episodes, 1999-2000) |
| Eric Payne | Secret Service Agent / ... (3 episodes, 2000-2001) |
| Catherine Kwong | Lauren Chin (3 episodes, 2003) |
| Sean Patrick Murphy | Floor Manager (3 episodes, 2000-2001) |
| Derek Coleman | Agent / ... (3 episodes, 2000-2005) |
| Paul Keeley | Agent Ellis Taylor (3 episodes, 2005-2006) |
| Colin K. Gray | Reporter / ... (3 episodes, 1999-2000) |
| Ken Weiler | Bowman / ... (3 episodes, 2004-2006) |
| Andy Milder | Aide Mark / ... (3 episodes, 2000-2003) |
| Larry Cox | Aid / ... (3 episodes, 2001-2002) |
| Stephanie Venditto | Jenn Wheeler / ... (3 episodes, 2002-2003) |
| Hira Ambrosino | Commentator #1 / ... (3 episodes, 2003-2004) |
| Dafidd McCracken | Agent #1 / ... (3 episodes, 1999-2000) |
| Doris E. McMillon | Reporter Sandy / ... (3 episodes, 2001) |
| Chad McKnight | Aide #5 / ... (3 episodes, 1999-2000) |
| Robert Noble | Butler / ... (3 episodes, 2000-2003) |
| John Colella | Announcer / ... (3 episodes, 2003-2004) |
| Towanda Underdue | Ball Attendee / ... (3 episodes, 2003-2004) |
| Lizz Robbins | Club Patron / ... (3 episodes, 2003) |
| James McMann | Inauguration Guest / ... (3 episodes, 2004-2006) |
| Vsevolod Horodyskyj | White House Staffer (3 episodes, 2004-2005) |
| Ken Weiner | Dr. Stremlowe (3 episodes, 2004) |
| Annie Corley | Mary Marsh (2 episodes, 1999-2000) |
| George Coe | Sen. Howard Stackhouse (2 episodes, 2001-2002) |
| David Graf | Colonel Chase (2 episodes, 2000-2001) |
| Hal Holbrook | Asst. Secretary of State Albie Duncan (2 episodes, 2001-2002) |
| Corbin Bernsen | Henry Shallick (2 episodes, 2001) |
| F. William Parker | Rev. Al Caldwell (2 episodes, 1999-2000) |
| James Hong | Chinese Ambassador (2 episodes, 2000-2002) |
| Gerald McRaney | USAF Gen. Alan Adamle (2 episodes, 2001-2004) |
| James Brolin | Governor Robert Ritchie, R-FL (2 episodes, 2002) |
| William Devane | Secretary of State Lewis Berryhill (2 episodes, 2003) |
| Paxton Whitehead | Bernard Thatch (2 episodes, 2000-2004) |
| Tony Plana | Mickey Troop (2 episodes, 2001) |
| Taye Diggs | Secret Service Agent Wesley (2 episodes, 2003) |
| Sam Lloyd | Bob Engler, U.S. Space Command (2 episodes, 1999-2002) |
| Felton Perry | Alcoholic Politician / ... (2 episodes, 2000-2002) |
| John Diehl | Claypool (2 episodes, 2000-2002) |
| James Handy | Rep. Joseph Bruno, R-PA (2 episodes, 2000-2001) |
| Richard Riehle | Off. Jack Sloan (2 episodes, 2001) |
| Kurt Fuller | SitRoom Civilian Advisor (2 episodes, 2002) |
| Wilson Cruz | Jack Sosa (2 episodes, 2004) |
| Edward James Olmos | Judge Roberto Mendoza / ... (2 episodes, 1999-2000) |
| John de Lancie | Al Kiefer (2 episodes, 2000) |
| Paul Provenza | Steve Onorato, Aide to the Sen. Maj. Leader (2 episodes, 2000) |
| Milo O'Shea | Chief Justice Roy Ashland (2 episodes, 2003-2004) |
| David Huddleston | Sen. Max Lobell, R (2 episodes, 2000-2002) |
| Suleka Mathew | Ms. Chakrabarty (2 episodes, 2004) |
| Harry Groener | Secretary of Agriculture Roger Tribbey (2 episodes, 2000-2003) |
| Daniel von Bargen | Air Force General Ken Shannon (2 episodes, 2000) |
| George Cheung | Chinese Ambassador Ling-Po (2 episodes, 2004-2006) |
| Michael Mantell | Jamie Hotchkiss / ... (2 episodes, 2001-2004) |
| Cress Williams | Lester (2 episodes, 2005-2006) |
| Michael Kagan | FBI Director George Arnold (2 episodes, 2004) |
| Deirdre Lovejoy | Lisa Wolfe (2 episodes, 2004) |
| Dean Norris | Steve Hodder - Republican Party Chairman (2 episodes, 2005-2006) |
| John Cothran Jr. | Civilian Advisor (2 episodes, 2002-2003) |
| Alan Dale | Secretary of Commerce Mitch Bryce (2 episodes, 2002-2003) |
| Cleo King | Marla Worisky (2 episodes, 2004-2005) |
| Ned Schmidtke | Admiral, Navy Chief of Staff / ... (2 episodes, 2001-2002) |
| Rose Rollins | Suzanne (2 episodes, 1999) |
| Faran Tahir | Manny (2 episodes, 2002-2003) |
| John Getz | Congressman Mark B. Sellner (2 episodes, 2006) |
| Mongo Brownlee | Secret Service Agent / ... (2 episodes, 1999-2001) |
| Peter White | Mr. Gage (2 episodes, 2000) |
| Jossie Thacker | Staffer / ... (2 episodes, 2001) |
| William Thomas Jr. | SitRoom Civilian Advisor David (2 episodes, 2002) |
| Zeljko Ivanek | Steve Atwood (2 episodes, 2003) |
| Eli Danker | Israeli Defense Minister Doran Mazar (2 episodes, 2004) |
| Philip Baker Hall | Senator Matt Hunt (2 episodes, 2004) |
| Joe Egender | Santos Volunteer (2 episodes, 2005) |
| Beau Billingslea | Agent Caswell / ... (2 episodes, 2004) |
| Bonita Friedericy | Gail Addison (2 episodes, 2004-2006) |
| Richard V. Licata | Congressman Lackey (2 episodes, 2004) |
| David Ramsey | Santos' Turnout Briefer / ... (2 episodes, 2006) |
| Jody Wood | Mr. Cameron (2 episodes, 2000) |
| Fred Ornstein | Congressman Harry Wade / ... (2 episodes, 2001-2005) |
| Mandy Freund | Claire Huddle / ... (2 episodes, 2003-2004) |
| Steven Pierce | OMB Director (2 episodes, 2003) |
| Patrick Falls | Billy / ... (2 episodes, 2001) |
| Kathrin Middleton | Diane Mathers (2 episodes, 2003-2004) |
| Tracey Costello | Agent Moody (2 episodes, 2004) |
| Evan Arnold | Ned (2 episodes, 2005) |
| Colette O'Connell | Ellen Trayers - Boston Globe (2 episodes, 2005-2006) |
| Tim Kelleher | Dylan Clark (2 episodes, 2005) |
| J.P. Hubbell | Agent #1 / ... (2 episodes, 2002-2003) |
| Jim Moret | Newscaster / ... (2 episodes, 2003) |
| Paul Rae | Reporter #2 / ... (2 episodes, 2004-2006) |
| Foo Fighters | Themselves (2 episodes, 2006) |
| Joe Cosgrove | Cardinal / ... (2 episodes, 2000-2002) |
| Jonathan Brent | Jim / ... (2 episodes, 2003-2004) |
| Ann Ducati | Maya Zahavy (2 episodes, 2004) |
| Roger Hampton | Floor Manager (2 episodes, 2004) |
| James Ingersoll | Cable News Pundit (2 episodes, 2004) |
| Sumalee Montano | Vinick Reporter #1 (2 episodes, 2005-2006) |
| Don Chastain | Reporter #2 (2 episodes, 2000) |
| Thomas J. McCarthy | Senator Thomas (2 episodes, 2001) |
| Eric Brandon | Nat (2 episodes, 2003) |
| Armando Valdes-Kennedy | Dave (2 episodes, 2004) |
| Alex Manette | Reporter #1 / ... (2 episodes, 2005) |
| Novella Nelson | Gail Fitzwallace (2 episodes, 2004) |
| George McDaniel | Officer #2 (2 episodes, 1999-2000) |
| David A. Kimball | Intelligence Officer #2 / ... (2 episodes, 2000-2006) |
| Lisa Croisette | Patty / ... (2 episodes, 2000-2001) |
| Joe O'Connor | Congressman #3 / ... (2 episodes, 2000-2001) |
| Larry Stahoviak | Staffer / ... (2 episodes, 2000-2001) |
| Bill Stevenson | Jaworski (2 episodes, 2000) |
| Cheryl Carter | Congresswomen Haas / ... (2 episodes, 2004-2005) |
| Gregory White | Congressman Auren (2 episodes, 2004-2005) |
| Andrew Caple-Shaw | Sean (2 episodes, 2005) |
| Kerstin Lindquist | Anchor (2 episodes, 2005) |
| Alexandra Ryan | Receptionist (2 episodes, 2006) |
| Dan Gerrity | Civilian / ... (2 episodes, 2002-2003) |
| Joel Anderson | Aide / ... (2 episodes, 2002-2003) |
| Ken Michelman | Ted Zukoski - Chicago Tribune (2 episodes, 2005-2006) |
| William James Jones | FBI Agent / ... (2 episodes, 2001-2002) |
| David Grant Wright | NASA Administrator Edwin Kelwick (2 episodes, 2004-2005) |
| Steven M. Gagnon | Officer #1 (2 episodes, 1999-2000) |
| Roger Ontiveros | Officer #3 / ... (2 episodes, 2000-2001) |
| Shishir Kurup | Zach (2 episodes, 2001) |
| Nick Jameson | Chet / ... (2 episodes, 2002) |
| Michael Raysses | Reporter / ... (2 episodes, 2002) |
| Phil Trask Jr. | Kevin - Reporter #3 / ... (2 episodes, 2005) |
| Ming Lo | Dr. Lee / ... (2 episodes, 2000-2004) |
| Richard Gross | Bailiff / ... (2 episodes, 2000-2003) |
| Ana Mercedes | Sally, Military Aide in SitRoom (2 episodes, 2001) |
| Krista Sutton | Reporter #4 (2 episodes, 2005) |
| Paul Moyer | Anchor #2 / ... (2 episodes, 2006) |
| Tim Van Pelt | Congressman Harry / ... (2 episodes, 2002) |
| Doug Hale | Anchor / ... (2 episodes, 2004) |
| Michael Rhoades | Reporter #3 / ... (2 episodes, 2005) |
| Ted Garcia | Newscaster / ... (2 episodes, 2000-2002) |
| Mary Kathleen Gordon | Woman (2 episodes, 2000-2002) |
| Ashleigh Olden | Aide / ... (2 episodes, 2002) |
| John Antonini | Jamie Reed (2 episodes, 2003) |
| Shannon Marshall | Randy Weathers (2 episodes, 2003) |
| David Brownstein | Reporter #2 / ... (2 episodes, 2005) |
| Sean Moran | Dr. Holbrook (2 episodes, 2000) |
| Dan Manning | Agent Banks / ... (2 episodes, 2003) |
| John Emmanuel | Agent (2 episodes, 2001) |
| Anita Dashiell | Reporter Jo (2 episodes, 2002) |
| Van Epperson | Curtis Shaeffer - Chief Usher (2 episodes, 2006) |
| John P. Connolly | Matt Kelley (2 episodes, 2002) |
| John Leslie Wolfe | GOP Leader / ... (2 episodes, 2000-2003) |
| Chris Schauble | Anchor / ... (2 episodes, 2002-2003) |
| Lewis Grenville | Reporter (2 episodes, 2001) |
| Leesa Severyn | ATF Anchor / ... (2 episodes, 2002-2004) |
| Laura Henry | Betty / ... (2 episodes, 2000-2003) |
| Larry Carroll | Newscaster #2 / ... (2 episodes, 2000-2001) |
| Amy Parks | Bartender Tammy (2 episodes, 2002-2003) |
| Rocky McMurray | Officer / ... (2 episodes, 2003) |
| Mary-Pat Green | Senator Choate / ... (2 episodes, 2002-2005) |
| Jerry Sroka | Reporter / ... (2 episodes, 2000) |
| Jane Lynch | Reporter / ... (2 episodes, 2000-2001) |
| John Aniston | Alexander Thompson (2 episodes, 2002) |
| Wendy Braun | Gail Mackee (2 episodes, 2002) |
| Michael Leydon Campbell | Max (2 episodes, 2003) |
| Aaron Ashmore | Trevor (2 episodes, 2005) |
| Tracy McCubbin | Lilly (2 episodes, 2000) |
| Mitch Gibney | Talking Head (2 episodes, 2003-2004) |
| Paul L. Ehrmann | Aide #2 / ... (2 episodes, 2000-2004) |
| Alex Baik | Secret Service Agent / ... (2 episodes, 1999-2000) |
| Bill LeVasseur | Presidential Aide (2 episodes, 1999) |
| Patricia Prata | Princess of Spain / ... (2 episodes, 2000-2002) |
| Christopher Francis | Passenger / ... (2 episodes, 2000) |
| Michael Ahl | Air Force Major General / ... (2 episodes, 2001-2006) |
| Scott Summitt | Presidential Reporter (2 episodes, 2002-2003) |
| Scott Norris | Canadian Hunter / ... (2 episodes, 2003-2005) |
| Stephen Alexander | Secret Service Agent Pitt (2 episodes, 2003) |
| Edward M. Beckford Jr. | Secret Service Agent (2 episodes, 2003) |
| Ralph Kampshoff | Rear Admiral Payne (2 episodes, 2003) |
| Paul Majors | Secret Service Agent (2 episodes, 2003) |
| Natasha Sattler | Teen Well Wisher / ... (2 episodes, 2003) |
| Al Sotto | FBI Agent (2 episodes, 2003) |
| Lisa Cornelison | Carmen / ... (2 episodes, 2004-2005) |
| John David Denison | Secret Service Agent (2 episodes, 2005) |
| John Chechitelli | White House Staffer (2 episodes, 2006) |
| Dax Garner | Foo Fighters Roadie (2 episodes, 2006) |
| Fatima Grate | Vinnick Staffer (2 episodes, 2006) |
| Omar Janakat | Santos Supporter (2 episodes, 2006) |
