• 
  Michael Grossman

  regizor
• 
  David Carson

  regizor
• 
  Tom Hanks

  regizor

• 
  Krista Adair

  Jo Schirra
• 
  Tom Amandes

  Astronautul Harrison Schmitt
• 
  Tom Hanks

  Jean-Luc Despont
• 
  David Andrews

  Astronautul Frank Borman
• 
  Rus Blackwell

  Joel Kruger (1 episode, 1998)

• 
  Graham Yost

  Engineer Dave (1 episode, 1998)
• 
  Dave Foley

  Alan Bean (1 episode, 1998)
• 
  James Rebhorn

  Harrison Storms (1 episode, 1998)
• 
  Clint Howard

  Paul Lucas (2 episodes, 1998)
• 
  Ralph Wilcox

  VIP (1 episode, 1998)
• 
  Diana Scarwid

  Joan Aldrin (1 episode, 1998)
• 
  Wendy Crewson

  Faye Stafford (1 episode, 1998)

• 
  Tony Goldwyn

  Neil Armstrong (2 episodes, 1998)
• 
  Mark Rolston

  Gus Grissom (3 episodes, 1998)
• 
  Tim Parati

  Blaisdell (2 episodes, 1998)
• 
  J. LaRose

  Anesthesiologist (1 episode, 1998)
• 
  Nick Searcy

  Deke Slayton (10 episodes, 1998)
• 
  Chris Ellis

  Bob Parker (1 episode, 1998)
• 
  Michael Laskin

  Larry Thompson (1 episode, 1998)
• 
  Cullen Douglas

  BOOSTER (1 episode, 1998)
• 
  Stephen Root

  Chris Kraft (5 episodes, 1998)
• 
  Kevin Pollak

  Joe Shea (1 episode, 1998)
• 
  Marc Macaulay

  Karl Heinze (1 episode, 1998)
• 
  Steve DuMouchel

  Jeff Jordy  (2 episodes, 1998)
• 
  Cary Elwes

  Michael Collins (3 episodes, 1998)
• 
  John E. Moyer

  Airline Pilot (Episode 8) (unknown episodes)
• 
  Mark Harmon

  Wally Schirra  (2 episodes, 1998)
• 
  Jim Howard

  William Schneider (1 episode, 1998)
• 
  Ted Levine

  Alan Shepard (2 episodes, 1998)
• 
  Steve Zahn

  Elliott See (1 episode, 1998)
• 
  Georges Wilson

  Reporter (unknown episodes)
• 
  Paul McCrane

  Pete Conrad (1 episode, 1998)
• 
  Sally Field

  Trudy Cooper (1 episode, 1998)
• 
  Jay Mohr

  Brett Hutchins (1 episode, 1998)
• 
  John Carroll Lynch

  Bob Gilruth (2 episodes, 1998)
• 
  Dylan Baker

  Bruce McCoy (1 episode, 1998)
• 
  Matt Craven

  Tom Kelly (1 episode, 1998)
• 
  Tchéky Karyo

  George Melies (1 episode, 1998)
• 
  Elizabeth Perkins

  Marilyn Lovell (1 episode, 1998)
• 
  Gary Cole

  Ed Mitchell (1 episode, 1998)
• 
  Shawn Pyfrom

  Ten Year Old Boy (1 episode, 1998)
• 
  Don Harvey

  Flight Director (1 episode, 1998)
• 
  Hank Stone

  Hotel Manager (1 episode, 1998)
• 
  Robert John Burke

  Bill Anders (2 episodes, 1998)
• 
  Lane Smith

  Emmett Seaborn (6 episodes, 1998)
• 
  Alan Ruck

  Tom Dolan (1 episode, 1998)
• 
  Doug McKeon

  Joe Allen (1 episode, 1998)
• 
  Rita Wilson

  Susan Borman
• 
  David Clennon

  Lee Silver (2 episodes, 1998)
• 
  Reed Birney

  John Houbolt (1 episode, 1998)
• 
  David Lenthall

  Sam Beddingfield (1 episode, 1998)
• 
  Jeffrey Pillars

  Charlie (1 episode, 1998)
• 
  Keith Flippen

  Jason (2 episodes, 1998)
• 
  Mitchell Laurance

  Bud Mahurin (1 episode, 1998)
• 
  Randell Haynes

  Houbolt's Critic #1 (1 episode, 1998)
• 
  Tim Daly

  Jim Lovell (4 episodes, 1998)
• 
  Jack Gilpin

  Ted Sorenson (1 episode, 1998)
• 
  Cynthia Stevenson

  Jane Conrad (1 episode, 1998)
• 
  Ann Cusack

  Jan Armstrong (2 episodes, 1998)
• 
  JoBeth Williams

  Marge Slayton (1 episode, 1998)
• 
  J. Don Ferguson

  Senator Stephen Young (1 episode, 1998)
• 
  Michael Harding

  Dick Thorson (1 episode, 1998)
• 
  Daniel Hugh Kelly

  Gene Cernan (5 episodes, 1998)
• 
  Dann Florek

  Robert Seamans (2 episodes, 1998)
• 
  Rhoda Griffis

  Martha Chaffee (1 episode, 1998)
• 
  Wesley Smith

  Teason (unknown episodes)
• 
  John M. Jackson

  Hal Deacon (1 episode, 1998)
• 
  Dan Lauria

  James Webb (2 episodes, 1998)
• 
  Chris Hogan

  Don Eyles (1 episode, 1998)
• 
  Harve Presnell

  Alan Shepard's party guest (Episode 9) (unknown episodes)
• 
  Betsy Brantley

  Jan Armstrong (1 episode, 1998)
• 
  George Newbern

  Stu Roosa (2 episodes, 1998)
• 
  Ethan Phillips

  Stanley Craig (1 episode, 1998)
• 
  Chris Isaak

  Ed White (3 episodes, 1998)
• 
  Mike Pniewski

  SURGEON  (3 episodes, 1998)
• 
  Joshua Malina

  Tim Messick (1 episode, 1998)
• 
  Max Wright

  Guenter Wendt (1 episode, 1998)
• 
  Jimmy Buffett

  First Journalist (unknown episodes)
• 
  Andrew Masset

  Dr. House (1 episode, 1998)
• 
  Peter Scolari

  Pete Conrad (1 episode, 1998)
• 
  Rick Warner

  Julian Bowman (2 episodes, 1998)
• 
  Joe Inscoe

  Chester Lee (1 episode, 1998)
• 
  Arthur Taxier

  Dr. Robert Van Dolah (1 episode, 1998)
• 
  Jo Anderson

  Pat White (2 episodes, 1998)
• 
  Kristian Truelsen

  Kurt Debus (1 episode, 1998)
• 
  Al Franken

  Jerome Weisner (1 episode, 1998)
• 
  Peter Horton

  Documentary Director (1 episode, 1998)
• 
  Geoffrey Nauffts

  Ed Gibson (1 episode, 1998)
• 
  Tom Verica

  Dick Gordon (3 episodes, 1998)
• 
  John Aylward

  Dr. Ray Pemberton (1 episode, 1998)
• 
  Jim Piddock

  John Hodge (1 episode, 1998)
• 
  Holmes Osborne

  George Low (3 episodes, 1998)
• 
  Daniel Hagen

  Honeycutt (1 episode, 1998)
• 
  Tommy Canary

  Simpkinson (1 episode, 1998)
• 
  R. Keith Harris

  Charlie (1 episode, 1998)
• 
  Andy Milder

  GUIDO (2 episodes, 1998)
• 
  Brett Rice

  Sam Langfitt (1 episode, 1998)
• 
  Tracy Frenkel

  Rocco Petrone (1 episode, 1998)
• 
  John Michael Higgins

  Master of Ceremonies (1 episode, 1998)
• 
  Kieran Mulroney

  Rusty Schweickart (2 episodes, 1998)
• 
  John Rothman

  Warren Moburg (1 episode, 1998)
• 
  David Cooper

  Businessman (1 episode, 1998)
• 
  Ann Magnuson

  Dee O'Hara (1 episode, 1998)
• 
  Brittany Snow
• 
  Dakin Matthews

  Dr. Floyd Thompson (1 episode, 1998)
• 
  Blythe Danner

  Narrator (1 episode, 1998)
• 
  Sam Anderson

  Thomas Paine (2 episodes, 1998)
• 
  David Preuss

  PROCEDURES (1 episode, 1998)
• 
  Remi Aubuchon

  Engineer Bob (1 episode, 1998)
• 
  Joe Farago

  Dr. Fred Kelly (1 episode, 1998)
• 
  Dan Butler

  Gene Kranz (2 episodes, 1998)
• 
  Grant Shaud

  Bob Carbee (1 episode, 1998)
• 
  Tom Nowicki

  David Bell (1 episode, 1998)
• 
  Jerry Hardin

  Ben Taylor (1 episode, 1998)
• 
  Zeljko Ivanek

  Ken Mattingly (1 episode, 1998)
• 
  Robert C. Treveiler

  L. Gordon Cooper (2 episodes, 1998)
• 
  David Kaufman

  David Gibson (1 episode, 1998)
• 
  Jay Karnes

  Investigator (Episode 2) (unknown episodes)
• 
  Debra Jo Rupp

  Marilyn See (1 episode, 1998)
• 
  Joe Spano

  George Mueller (1 episode, 1998)
• 
  Bryan Cranston

  Buzz Aldrin / Edwin Aldrin
• 
  Mason Adams

  Clinton Anderson (1 episode, 1998)
• 
  Holland Hayes

  Tech #1 (1 episode, 1998)
• 
  Mark Lainer

  Doubting Engineer (1 episode, 1998)
• 
  John Slattery

  Walter Mondale (1 episode, 1998)
• 
  Jeffrey William Evans

  Director (1 episode, 1998)
• 
  Steve Raulerson

  RECOVERY (1 episode, 1998)
• 
  Fredric Lehne

  Walt Cunningham (2 episodes, 1998)
• 
  Norbert Weisser

  Werner Von Braun  (2 episodes, 1998)
• 
  Brandon Smith

  John Healey (1 episode, 1998)
• 
  David Drew Gallagher

  RETRO (2 episodes, 1998)
• 
  Deborah May

  Miss Hedges (1 episode, 1998)
• 
  Robert Curtis Brown

  Gavin O'Rourke (1 episode, 1998)
• 
  JoAnna Garcia Swisher

  Julie Shepard
• 
  Conor O'Farrell

  James McDivitt  (4 episodes, 1998)
• 
  Adam Baldwin

  Fred Haise

• 
  Tom Hanks

  scriitor