- Tom Hanks
- Â Self - Host / ... 12 episodes, 1998
- Nick Searcy
- Â Deke Slayton 10 episodes, 1998
- Lane Smith
- Â Emmett Seaborn 6 episodes, 1998
- David Andrews
- Â Frank Borman 5 episodes, 1998
- Daniel Hugh Kelly
- Â Gene Cernan 5 episodes, 1998
- Stephen Root
- Â Chris Kraft 5 episodes, 1998
- David Clyde Carr
- Â Gerry Griffin 4 episodes, 1998
- Tim Daly
- Â Jim Lovell 4 episodes, 1998
- Steve Hofvendahl
- Â Thomas Stafford / ... 4 episodes, 1998
- Conor O'Farrell
- Â James McDivitt / ... 3 episodes, 1998
- Brett Cullen
- Â Dave Scott 3 episodes, 1998
- Cary Elwes
- Â Michael Collins 3 episodes, 1998
- Ben Marley
- Â Roger Chaffee 3 episodes, 1998
- Mike Pniewski
- Â SURGEON / ... 3 episodes, 1998
- Holmes Osborne
- Â George Low 3 episodes, 1998
- Tom Verica
- Â Dick Gordon 3 episodes, 1998
- John Posey
- Â John Young 3 episodes, 1998
- Rita Wilson
- Â Susan Borman 3 episodes, 1998
- Mark Rolston
- Â Gus Grissom 3 episodes, 1998
- John M. Adrian
- Â FIDO 3 episodes, 1998
- Chris Isaak
- Â Ed White 2 episodes, 1998
- Tom Amandes
- Â Jack Schmitt 2 episodes, 1998
- Sam Anderson
- Â Thomas Paine 2 episodes, 1998
- Jo Anderson
- Â Pat White 2 episodes, 1998
- Robert John Burke
- Â Bill Anders 2 episodes, 1998
- David Clennon
- Â Dr. Leon (Lee) Silver / ... 2 episodes, 1998
- Dan Butler
- Â Gene Kranz 2 episodes, 1998
- Keith Flippen
- Â Jason 2 episodes, 1998
- Bryan Cranston
- Â Buzz Aldrin / ... 2 episodes, 1998
- Steve DuMouchel
- Â Jeff Jordy / ... 2 episodes, 1998
- Ann Cusack
- Â Jan Armstrong 2 episodes, 1998
- J. Downing
- Â CAPCOM / ... 2 episodes, 1998
- Keith Dickerson
- Â Engineer / ... 2 episodes, 1998
- Dann Florek
- Â Robert Seamans 2 episodes, 1998
- David Drew Gallagher
- Â RETRO 2 episodes, 1998
- Tim Parati
- Â Blaisdell 2 episodes, 1998
- Clint Howard
- Â Paul Lucas 2 episodes, 1998
- Jim Leavy
- Â C.C. Williams 2 episodes, 1998
- Tony Goldwyn
- Â Neil Armstrong 2 episodes, 1998
- Key Howard
- Â Reporter #1 / ... 2 episodes, 1998
- Andy Milder
- Â GUIDO 2 episodes, 1998
- Fredric Lehne
- Â Walt Cunningham 2 episodes, 1998
- James-Michael Roddy
- Â FIDO / ... 2 episodes, 1998
- Ted Levine
- Â Alan Shepard 2 episodes, 1998
- John Carroll Lynch
- Â Bob Gilruth 2 episodes, 1998
- George Newbern
- Â Stu Roosa 2 episodes, 1998
- Dan Lauria
- Â James Webb 2 episodes, 1998
- John Mese
- Â Donn Eisele 2 episodes, 1998
- Kieran Mulroney
- Â Rusty Schweickart 2 episodes, 1998
- Robert C. Treveiler
- Â L. Gordon Cooper 2 episodes, 1998
- Rick Warner
- Â Julian Bowman 2 episodes, 1998
- Robert Quinn
- Â ECOM / ... 2 episodes, 1998
- Norbert Weisser
- Â Werner Von Braun / ... 2 episodes, 1998
- Dylan Baker
- Â Bruce McCoy 1 episode, 1998
- Mason Adams
- Â Clinton Anderson 1 episode, 1998
- Bart Braverman
- Â Older Sahjid 1 episode, 1998
- Remi Aubuchon
- Â Engineer Bob 1 episode, 1998
- Tammy Arnold
- Â Sarah 1 episode, 1998
- Jeff Breslauer
- Â Technician 1 episode, 1998
- Brandon Ambrose
- Â Edwin Borman 1 episode, 1998
- Krista Adair
- Â Jo Schirra 1 episode, 1998
- Adam Baldwin
- Â Fred Haise 1 episode, 1998
- Reed Birney
- Â John Houbolt 1 episode, 1998
- John Aylward
- Â Dr. Ray Pemberton 1 episode, 1998
- Rus Blackwell
- Â Joel Kruger 1 episode, 1998
- George Bartenieff
- Â Hugh Dryden 1 episode, 1998
- Jay T. Becker
- Â Jim Lewis 1 episode, 1998
- Robert Curtis Brown
- Â Gavin O'Rourke 1 episode, 1998
- David Brisbin
- Â Allyn B. Hazard 1 episode, 1998
- Brian Brightman
- Â Editor 1 episode, 1998
- Barry Bell
- Â Rocco Petrone 1 episode, 1998
- Katie Austin
- Â Susan Lovell 1 episode, 1998
- George Colangelo
- Â 'Buck' Willoughby 1 episode, 1998
- Roger Bernard
- Â CONTROL 1 episode, 1998
- Virginia Ellen Chappell
- Â Concerned Spectator 1 episode, 1998
- Dave Foley
- Â Alan Bean 1 episode, 1998
- Gary Cole
- Â Ed Mitchell 1 episode, 1998
- Blythe Danner
- Â Narrator 1 episode, 1998
- Betsy Brantley
- Â Jan Armstrong 1 episode, 1998
- Robert Catrini
- Â Reporter #48 1 episode, 1998
- Max M. Brown
- Â Glennan 1 episode, 1998
- Marcelo Durst
- Â Documentary Cameraman 1 episode, 1998
- Peter Anthony
- Â Engineer 1 episode, 1998
- Wendy Crewson
- Â Faye Stafford 1 episode, 1998
- Matt Craven
- Â Tom Kelly 1 episode, 1998
- Chris Ellis
- Â Bob Parker 1 episode, 1998
- Joe Farago
- Â Dr. Fred Kelly 1 episode, 1998
- Maury Covington
- Â CIA #2 1 episode, 1998
- Tom Brooks
- Â Jack Garman 1 episode, 1998
- Andrew Chaikin
- Â 'Meet The Press' Host 1 episode, 1998
- Donna Badger
- Â Secretary #2 1 episode, 1998
- Jack Carroll
- Â Reporter #3 1 episode, 1998
- JoAnna Garcia Swisher
- Â Julie Shepard 1 episode, 1998
- Kelly Collins Lintz
- Â Hotel Clerk 1 episode, 1998
- Lowell Fenner
- Â Russ Lawrence 1 episode, 1998
- Janis Benson
- Â Senator Margaret C. Smith 1 episode, 1998
- Colette Piceau
- Â Reporter #4 1 episode, 1998
- Paul McCrane
- Â Pete Conrad 1 episode, 1998
- Joe Candelora
- Â Cameraman 1 episode, 1998
- Heather De Oreo
- Â Doris 1 episode, 1998
- Dan Bright
- Â Mondale's Aide 1 episode, 1998
- Keith Dorman
- Â Kelly's Assistant 1 episode, 1998
- Henderson Gilliland
- Â Bud 1 episode, 1998
- Keith Graham
- Â Skip Chauvin 1 episode, 1998
- Mark Harmon
- Â Wally Schirra 1 episode, 1998
- Jerry Hardin
- Â Ben Taylor 1 episode, 1998
- Geoffrey Nauffts
- Â Ed Gibson 1 episode, 1998
- Joe Inscoe
- Â Chester Lee 1 episode, 1998
- George Kapetan
- Â Ed Fendell 1 episode, 1998
- John Drew
- Â Mylar Engineer 1 episode, 1998
- Tommy Canary
- Â Simpkinson 1 episode, 1998
- Sally Field
- Â Trudy Cooper 1 episode, 1998
- Tchéky Karyo
- Â George Melies 1 episode, 1998
- Marc Macaulay
- Â Karl Henize 1 episode, 1998
- Michael Harding
- Â Dick Thorson 1 episode, 1998
- Bill Cordell
- Â Pyro Technician 1 episode, 1998
- Jeffrey William Evans
- Â Director 1 episode, 1998
- Holland Hayes
- Â Tech #1 1 episode, 1998
- Ronny Cox
- Â Lee Atwood 1 episode, 1998
- Shawn Pyfrom
- Â Ten Year Old Boy 1 episode, 1998
- Doug McKeon
- Â Joe Allen 1 episode, 1998
- R. Keith Harris
- Â Charlie 1 episode, 1998
- Tracy Frenkel
- Â Rocco Petrone 1 episode, 1998
- Randell Haynes
- Â Houbolt's Critic #1 1 episode, 1998
- Billy Flanigan
- Â Suit #2 1 episode, 1998
- Chris Hogan
- Â Don Eyles 1 episode, 1998
- James Michael Detmar
- Â Engineer Two 1 episode, 1998
- Harold Fletcher
- Â Dr. Swigert 1 episode, 1998
- Timothy A. Franta
- Â SURGEON 1 episode, 1998
- Jim Helsinger
- Â PAO 1 episode, 1998
- Gary Rorman
- Â Geologist 1 episode, 1998
- George Hoggard
- Â EVAC Supervisor 1 episode, 1998
- Jason Khoury
- Â Young Sahjid 1 episode, 1998
- John Michael Higgins
- Â Master of Ceremonies 1 episode, 1998
- Elizabeth Morehead
- Â Tracy Cernan 1 episode, 1998
- Cullen Douglas
- Â BOOSTER 1 episode, 1998
- Andrew Heller
- Â CIA #1 1 episode, 1998
- Gwen Hollander
- Â Laura Shepard 1 episode, 1998
- Michael Raynor
- Â Al Worden 1 episode, 1998
- Tim Goodwin
- Â Mr. Radio 1 episode, 1998
- Jay Honeycutt
- Â Launch Director 1 episode, 1998
- Peter Horton
- Â Documentary Director 1 episode, 1998
- J. Don Ferguson
- Â Senator Stephen Young 1 episode, 1998
- Jim Howard
- Â William Schneider 1 episode, 1998
- Kristie Horton
- Â Barbara Lovell 1 episode, 1998
- Arland Russell
- Â Geology Professor 1 episode, 1998
- Erich Hoffelder
- Â Brett's Soundman 1 episode, 1998
- John Travis
- Â John Aaron 1 episode, 1998
- Al Franken
- Â Jerome Weisner 1 episode, 1998
- J.C. Quinn
- Â Special Effects Worker 1 episode, 1998
- Paul Kiernan
- Â Glennan's Assistant 1 episode, 1998
- Daniel Hagen
- Â Honeycutt 1 episode, 1998
- John Hostetter
- Â Ralph Cooper 1 episode, 1998
- David Kelsey
- Â GUIDO 1 episode, 1998
- Steve Howard
- Â CAPCOM 1 episode, 1998
- Zeljko Ivanek
- Â Ken Mattingly 1 episode, 1998
- Don Harvey
- Â Flight Director 1 episode, 1998
- Jack Gilpin
- Â Ted Sorenson 1 episode, 1998
- J. LaRose
- Â Anesthesiologist 1 episode, 1998
- Ru Flynn
- Â Storms' Secretary 1 episode, 1998
- Brian Lafontaine
- Â Young Engineer 1 episode, 1998
- Isa Totah
- Â Farouk El-Baz 1 episode, 1998
- Ann Magnuson
- Â Dee O'Hara 1 episode, 1998
- Mark Lainer
- Â Doubting Engineer 1 episode, 1998
- Don Fowler
- Â Harrison Storms, Jr. 1 episode, 1998
- Bill Leavy
- Â GNC 1 episode, 1998
- Elliot Kachnycz
- Â Jay Lovell 1 episode, 1998
- Joshua Malina
- Â Tim Messick 1 episode, 1998
- Rhoda Griffis
- Â Martha Chaffee 1 episode, 1998
- Gareth Williams
- Â Jim Irwin 1 episode, 1998
- John M. Jackson
- Â Hal Deacon 1 episode, 1998
- DeLane Matthews
- Â Pat McDivitt 1 episode, 1998
- Andrew Masset
- Â Dr. House 1 episode, 1998
- Matthew Lussier
- Â Arnold Whitaker 1 episode, 1998
- Mikki Scanlon
- Â Pat Collins 1 episode, 1998
- J. Michael Hunter
- Â Skip Chauvin 1 episode, 1998
- Cindy Ferda
- Â Deke's Secretary 1 episode, 1998
- Eric Paisley
- Â BBC News Reader 1 episode, 1998
- Timothy McLaughlin
- Â TELMU 1 episode, 1998
- Claudia Miller
- Â Reporter #72 1 episode, 1998
- Phillip Martinez
- Â John Coursen 1 episode, 1998
- Mary Thompson Hunt
- Â Teacher 1 episode, 1998
- Kathy Karol
- Â Shirley 1 episode, 1998
- David Kaufman
- Â David Gibson 1 episode, 1998
- Robin O'Dell
- Â Gaye Alford 1 episode, 1998
- Jack Mountford
- Â Christopher Conrad 1 episode, 1998
- Fred Mooneyham
- Â Houbolt's Critic #2 1 episode, 1998
- Deirdre O'Connell
- Â Barbara Young 1 episode, 1998
- Tom Kouchalakos
- Â Technician 1 episode, 1998
- Kim Ostrenko
- Â Louise Shepard 1 episode, 1998
- Jeffrey Parrish
- Â BOOSTER 1 episode, 1998
- Mati Moralejo
- Â Editor 1 episode, 1998
- William Larson
- Â Seymour Rosen 1 episode, 1998
- Elizabeth Perkins
- Â Marilyn Lovell 1 episode, 1998
- Mitchell Laurance
- Â Bud Mahurin 1 episode, 1998
- Jeff Pillars
- Â Charlie 1 episode, 1998
- Michael Laskin
- Â Larry Thompson 1 episode, 1998
- Dean Napolitano
- Â Seaman's Assistant 1 episode, 1998
- Philip Nolen
- Â Nerd #1 1 episode, 1998
- Michael Rafferty
- Â Back Room Man #2 1 episode, 1998
- Roger Ranney
- Â Back Room Man #1 1 episode, 1998
- John Nutten
- Â Colleague #1 1 episode, 1998
- Christopher Miles
- Â TV #3 1 episode, 1998
- Caroline Ross
- Â Scrub Nurse 1 episode, 1998
- Debra Jo Rupp
- Â Marilyn See 1 episode, 1998
- Jay Mohr
- Â Brett Hutchins 1 episode, 1998
- Diana Scarwid
- Â Joan Aldrin 1 episode, 1998
- Andrew Rubin
- Â Jules Bergman 1 episode, 1998
- David Lenthall
- Â Sam Beddingfield 1 episode, 1998
- Steve Purnick
- Â Clyde Teague 1 episode, 1998
- Cynthia Stevenson
- Â Jane Conrad 1 episode, 1998
- Jeff Moldovan
- Â Reporter #7 1 episode, 1998
- Brian Shields
- Â Fred Borman 1 episode, 1998
- Dakin Matthews
- Â Dr. Floyd Thompson 1 episode, 1998
- Kurt Smildsin
- Â Flight Director #1 1 episode, 1998
- Dennis Neal
- Â Suit #1 1 episode, 1998
- Tom Stearns
- Â Dick 1 episode, 1998
- Robert Serwatka
- Â EE COM 1 episode, 1998
- Lamont Lofton
- Â Engineer One 1 episode, 1998
- Steve Sands
- Â Nerd #2 1 episode, 1998
- Stan Petter
- Â Colleague #2 1 episode, 1998
- Alan Ruck
- Â Tom Dolan 1 episode, 1998
- JoBeth Williams
- Â Marge Slayton 1 episode, 1998
- Marty Stonerock
- Â Circulating Nurse 1 episode, 1998
- Don C. Noderer
- Â TV #1 1 episode, 1998
- Brandon Smith
- Â John Healey 1 episode, 1998
- Jack Swanson
- Â Priest 1 episode, 1998
- Lesa Thurman
- Â Joan Roosa 1 episode, 1998
- Graham Timbes
- Â Flight Director #2 1 episode, 1998
- Kevin Pollak
- Â Joe Shea 1 episode, 1998
- Grant Shaud
- Â Bob Carbee 1 episode, 1998
- Deborah May
- Â Miss Hedges 1 episode, 1998
- Kristian Truelsen
- Â Kurt Debus 1 episode, 1998
- Janet Peterson
- Â Mrs. Swigert 1 episode, 1998
- Randy G. Stephens
- Â Curious Spectator 1 episode, 1998
- Ethan Phillips
- Â Stanley Craig 1 episode, 1998
- Max Wright
- Â Guenter Wendt 1 episode, 1998
- Robby Preddy
- Â Phyllis Storms 1 episode, 1998
- Robert Walker
- Â GNC (Telmu) 1 episode, 1998
- Russell Warner
- Â John Rigsby 1 episode, 1998
- Ric Reitz
- Â Reporter #8 1 episode, 1998
- Ashleigh Ann Wood
- Â Alice Shepard 1 episode, 1998
- Kevin Rainsberger
- Â Dr. Berry 1 episode, 1998
- James Rebhorn
- Â Harrison Storms 1 episode, 1998
- Graham Yost
- Â Engineer Dave 1 episode, 1998
- Brett Rice
- Â Sam Langfitt 1 episode, 1998
- Greg Neff
- Â Chamber President 1 episode, 1998
- Tom Nowicki
- Â David Bell 1 episode, 1998
- Ruth Reid
- Â Betty Grissom 1 episode, 1998
- John Rothman
- Â Warren Moburg 1 episode, 1998
- Terry Odem
- Â Screaming Woman 1 episode, 1998
- Steve Zurk
- Â George Hage 1 episode, 1998
- Paul Rouffa
- Â Mr. AP 1 episode, 1998
- Jim Piddock
- Â John Hodge 1 episode, 1998
- Gerard Russell
- Â Suit #3 1 episode, 1998
- Frank Silva
- Â Levine 1 episode, 1998
- John Slattery
- Â Walter Mondale 1 episode, 1998
- Joe Spano
- Â George Mueller 1 episode, 1998
- David Preuss
- Â PROCEDURES 1 episode, 1998
- Catherine Stork
- Â TV #4 1 episode, 1998
- Jan Taylor Hendricks
- Â TV #2 1 episode, 1998
- Kristin Stone
- Â Astronaut Wife 1 episode, 1998
- Todd Thompson
- Â TV #5 1 episode, 1998
- Arthur Taxier
- Â Dr. Robert Van Dolah 1 episode, 1998
- Steve Raulerson
- Â RECOVERY 1 episode, 1998
- Kathy Tyrell
- Â Shea's Secretary 1 episode, 1998
- Doug Truelsen
- Â Mr. UPI 1 episode, 1998
- Cyndi Vicino
- Â Reporter #2 1 episode, 1998
- Linwood Sasser
- Â Press Rep. 1 episode, 1998
- Dave Wagner
- Â Anchor 1 episode, 1998
- Peter Scolari
- Â Pete Conrad 1 episode, 1998
- George Wilson
- Â Reporter #6 1 episode, 1998
- Hank Stone
- Â Hotel Manager 1 episode, 1998
- Bruce Taylor
- Â Staff Member 1 episode, 1998
- Ralph Wilcox
- Â VIP 1 episode, 1998
- Rich Williams
- Â Shreveportian 1 episode, 1998
- Steve Zahn
- Â Elliott See 1 episode, 1998
- Jazz Raycole
- Â Lead Dancer unknown episodes
- Jay Karnes
- Â Investigator (Episode 2) unknown episodes
- Jimmy Buffett
- Â First Journalist unknown episodes
- John F. Kennedy
- Â Self (archive footage) unknown episodes
- Robert F. Kennedy
- Â Self (archive footage) unknown episodes
- Walter Cronkite
- Â Self (archive footage) unknown episodes
- Lyndon B. Johnson
- Â Self (archive footage) unknown episodes
- Lee Perkins
- Â Astronaut unknown episodes
- Shawn Driscoll
- Â Reporter unknown episodes
- Georges Wilson
- Â Reporter unknown episodes
- Tim Powell
- Â Harrison unknown episodes
- Scott duPont
- Â NASA security guard unknown episodes
- Bruce Roberts
- Â Waiter unknown episodes
- Rick Forrester
- Â Air Force Captain unknown episodes
- Signe Kiesel
- Â Astronaut's Wife unknown episodes
- Mark Brown
- Â Sim Tech unknown episodes
- Dean Shull
- Â Harry the Bellhop unknown episodes
- Renee Behan
- Â Astronaut's Wife unknown episodes
- Suzanne Niedland
- Â Screaming Woman unknown episodes
- Bill Larson
- Â TV Anchor unknown episodes
- Alan Sader
- Â Dr. Adels unknown episodes
- Stefen Laurantz
- Â Frank Hutchinson unknown episodes
- Tyler Cravens
- Â Brett's Soundman unknown episodes
- Timothy Bass
- Â Hal unknown episodes
- Russell Sanderlin Sr.
- Â NASA Official - Apollo 7, 11 Mission unknown episodes
- Wesley Smith
- Â Teason unknown episodes
- Jim McClellan
- Â Reporter unknown episodes
- Sally A. Kolar
- Â Concerned Mom unknown episodes
- Wendy Womble
- Â Woman Friend unknown episodes
- Jim Busby
- Â Other Engineer unknown episodes
- Roger Groseclose
- Â Jim (NASA reporter) unknown episodes
- Del Spearman
- Â Young Sahjid unknown episodes
- Kim Vandenworm
- Â Secretary unknown episodes
- Fran Costanza
- Â Irate Woman unknown episodes
- Manny R. Virata
- Â PAO unknown episodes
- Pam Stuart
- Â Distinguished Woman unknown episodes
- Carl Coleman
- Â Engineer (part 6) unknown episodes
- Patricia Johns
- Â Webb's Secretary unknown episodes
- Emilio Diaz
- Â Astronaut (uncredited) 3 episodes, 1998
- Daniel Tomeu
- Â MOCR (uncredited) 3 episodes, 1998
- Bob Brzuchalski
- Â NASA Tech / ... (uncredited) 3 episodes, 1998
- Aj Billions
- Â Nasa Technician / ... (uncredited) 2 episodes, 1998
- Summer Raine
- Â Businesswoman / ... (uncredited) 2 episodes, 1998
- William C. Martin Jr.
- Â Nasa Technician / ... (uncredited) 2 episodes, 1998
- David Duchovny
- Â Narrator (uncredited) 1 episode, 1998
- Billy West
- Â Woody Woodpecker (uncredited) 1 episode, 1998
- Joseph Aviel
- Â Nasa Technician (uncredited) 1 episode, 1998
- Ray Buffer
- Â Journalist (uncredited) 1 episode, 1998
- Richard Yett
- Â T.V. News Crew member (uncredited) 1 episode, 1998
- Max Kohnke
- Â Mission Control Operator (uncredited) 1 episode, 1998
- Michael Pope
- Â Journalist (uncredited) 1 episode, 1998
- Tina Lugo
- Â Extra (uncredited) 1 episode, 1998
- Jeff Standard
- Â Mission Control Technician (uncredited) 1 episode, 1998
- Wendy Klassen
- Â Clerk / ... (uncredited) 1 episode, 1998
- Jesse G. Martin
- Â Pilot / ... (uncredited) 1 episode, 1998
- Gustavo Perez
- Â Cape Canaveral tech (uncredited) 1 episode, 1998
- Shawn Ramagos
- Â Reporter (uncredited) 1 episode, 1998
- Kurt Leucht
- Â Air Force Captain (uncredited) 1 episode, 1998
- Francie Varveris Michas
- Â Reporter / ... (uncredited) 1 episode, 1998
- Kenneth Passero
- Â T.V. Anchor (uncredited) 1 episode, 1998
- Richard Nixon
- Â Self (archive footage) (uncredited) unknown episodes
- Martin Luther King
- Â Self (archive footage) (uncredited) unknown episodes
- Sallie Glaner
- Â School Teacher (uncredited) unknown episodes
- Yuri Gagarin
- Â Self (with Khrushchev) (archive footage) (uncredited) unknown episodes
- Nikita Khrushchev
- Â Self (with Gagarin) (archive footage) (uncredited) unknown episodes
- Edwin Newman
- Â Self (newsman) (archive footage) (uncredited) unknown episodes
- Dekker Dreyer
- Â Extra (uncredited) unknown episodes
- John E. Moyer
- Â Airline Pilot (Episode 8) (uncredited) unknown episodes
- Ronald Fox
- Â Melie's light tech (uncredited) unknown episodes
- Alexey Leonov
- Â Self (first to walk in space) (archive footage) (uncredited) unknown episodes
- Sheri Schifter
- Â Astronaut's wife (uncredited) unknown episodes
- Craig Greca
- Â Engineer / ... (uncredited) unknown episodes
- Robert Stio
- Â Reporter (uncredited) unknown episodes
- John G. Rice Jr.
- Â News reporter (uncredited) unknown episodes