唐·阿米契
Don Ameche
饰：Arthur 'Art' Selwyn
威尔福德·布利姆雷
Wilford Brimley
饰：Benjamin 'Ben' Luckett
柯特妮·考克斯
Courteney Cox
饰：Sara
休姆·克罗宁
Hume Cronyn
饰：Joseph 'Joe' Finley
杰克·吉尔福德
Jack Gilford
饰：Bernard 'Bernie' Lefkowitz
斯蒂夫·古根伯格
Steve Guttenberg
饰：Jack Bonner
巴莱特·奥利佛
Barret Oliver
饰：David
玛伦·斯塔普莱顿
Maureen Stapleton
饰：Marilyn 'Mary' Luckett
伊莲妮·斯楚奇
Elaine Stritch
饰：Ruby Feinberg
杰西卡·坦迪
Jessica Tandy
饰：Alma Finley
格温·沃顿
Gwyneth Evelyn Verdon
饰：Bess McCarthy Selwyn
塔妮·韦尔奇
Tahnee Welch
饰：Kitty
琳达·哈里逊
Linda Harrison
饰：Susan
小蒂龙·鲍尔
Tyrone Power Jr.
饰：Pillsbury - Antarean
Mike Nomad
饰：Doc
Wendy J. Cooke
Wendy J. Cooke
饰：Phil - Antarean (as Wendy Cooke)
赫塔威尔
Herta Ware
饰：Rose Lefkowitz
Brian C. Smith
Brian C. Smith
饰：Dr. Baron - SPOI
Fred Buch
饰：Alma's Doctor
Harold Bergman
Harold Bergman
饰：Dr. Erwin
Glenn Scherer
Glenn Scherer
饰：Bess' Doctor
Tom Kouchalakos
饰：Doug - SPOI
Alan Jordan
饰：Orderly (as Alan R. Jordan)
Fritz Dominique
饰：Orderly #2
Iris Acker
饰：Mrs. Cashman
Will Marchetti
饰：General Jefferds
Shelley Spurlock
饰：Rebecca - SPOI
Ted Milford
Ted Milford
饰：Kid #1
Chris Fuxa
Chris Fuxa
饰：Kid #2
Bill Wohrman
饰：Coach
Jay Smith
Jay Smith
饰：Catcher
Tony Vila Jr.
Tony Vila Jr.
饰：Umpire
Brian Jay Andrews
Brian Jay Andrews
饰：Visiting Catcher
David Easton
David Easton
饰：Player #1
Matt Ford
Matt Ford
饰：Player #2
Jack McDermott
饰：Spectator
Darcy Shean
Darcy Shean
饰：Woman in Restaurant
Barrie Mizerski
Barrie Mizerski
饰：Waiter
麦德琳丽
Madeline Lee
饰：Impatient Woman
Mal Jones
饰：Man at Kiosk
Patricia Rainier
Patricia Rainier
饰：Man's Wife
Richard Jasen
饰：Little Boy
Patricia Winters
Patricia Winters
饰：Lamaze Teacher
Rachel Renick
Rachel Renick
饰：Janet
Ryan Szurgot
Ryan Szurgot
饰：Little Boy #1
Anthony Finazzo
饰：Little Boy #2
Kelly Jasen
Kelly Jasen
饰：Little Girl #1
Stephanie Oldziej
Stephanie Oldziej
饰：Little Girl #2
Priscilla Ashley Behne
Priscilla Ashley Behne
饰：Little Girl #3
Glenn L. Robbins
Glenn L. Robbins
饰：Mr. Szydlo
Bruce McLaughlin
Bruce McLaughlin
饰：Man on Glass Bottom Boat
Buddy Reynolds
Buddy Reynolds
饰：Airforce Policeman
Carlos González
Carlos González
饰：SPOI Janitor (as Carlos Gonzales)
Kevin Corrigan
Kevin Corrigan
饰：SPOI Security Gard
Robert Gwaltney
Robert Gwaltney
饰：Clerk
罗伯特·肖特
Robert Short
饰：Technician
Sean Cunningham
Sean Cunningham
饰：First Mate (uncredited)
布莱恩·丹内利
Brian.Dennehy
饰：Walter - Alien Leader (uncredited)
Kai Thorup
饰：Basketball onlooker (uncredited)
卡洛斯·冈萨雷兹
Carlos González
饰：SPOI Janitor,(as Carlos Gonzales)