cast
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Dennis Quaid
Lt. Tuck Pendleton
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Martin Short
Jack Putter
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Meg Ryan
Lydia Maxwell
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Kevin McCarthy
Victor Eugene Scrimshaw
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Fiona Lewis
Dr. Margaret Canker
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Vernon Wells
Mr. Igoe
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Robert Picardo
The Cowboy
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Wendy Schaal
Wendy
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Harold Sylvester
Pete Blanchard
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William Schallert
Dr. Greenbush
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Henry Gibson
Mr. Wormwood
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John Hora
Ozzie Wexler
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Mark L. Taylor
Dr. Niles
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Orson Bean
Lydia's Editor
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Kevin Hooks
Duane
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Kathleen Freeman
Dream Lady
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Archie Hahn
Messenger
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Dick Miller
Cab Driver
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Kenneth Tobey
Man in Restroom
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Joe Flaherty
Waiting Room Patient
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Andrea Martin
Waiting Room Patient
- Jason Laskay Scrimshaw's Henchman
- Frank Miller Scrimshaw's Henchman
- Shawn Nelson Wendell
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Christine Avila
Lab Technician
- Alexandra Borrie Lab Technician
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Jenny Gago
Lab Technician
- Robert Gounley Lab Technician
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Grainger Hines
Rusty
- Mike Garibaldi Cop
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Richard McGonagle
Cop
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Terence McGovern
Travel Agent
- Robert Neches Lab Guard
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Rance Howard
Supermarket Customer
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Chuck Jones
Supermarket Customer
- Laura Waterbury Supermarket Customer
- Kurt Braunreiter Lab Assault Henchman
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Robert Gray
Lab Assault Henchman
- Brewster Sears Lab Assault Henchman
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Alan Blumenfeld
Man with Camera
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Jeffrey Boam
Lydia's Interviewee
- Sydne Squire Stewardess
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Paul Barselou
Man on Plane
- John Miranda Man in Elevator
- Jordan Benjamin Little Kid in Mall
- Roberto Ramirez Chef
- Virginia Boyle Shopping Lady
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Herb Mitchell
Camera Store Clerk
- John Harwood Lab Henchman
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Neil Ross
Pod Computer (voice)
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Charles Aidman
Speaker at Banquet
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Joe Dante
Vectorscope Employee (uncredited)