“- Col. Colin Caine: She's not human she's an alien, she'll destroy you!
- Col. Tom Carlsen: She destroyed worlds...”
Peter Firth - Col. Colin Caine
Steve Railsback - Col. Tom Carlsen

“- Coleye: This is similar to the Martian incident of 1963.
- Armitan: Careful, stupid. Not only is that incident classified, it never happened!”
Wallace Shawn - Coleye
Ray Walston - Armitan

“Your spaceship is double-parked in my living room.”
Jeff Daniels - Tim O'Hara

“- Uncle Martin: Martians use 100% of their brain while humans only use 10%.
- Tim O'Hara: No, we're smarter than that.
- Uncle Martin: Your astronauts pee in their spacesuits. Case closed.”
Chris Lloyd - Uncle Martin
Jeff Daniels - Tim O'Hara

“- Mike Nelson: I'm beginning to think they're not from around here.
- Tom Servo: No, I bet you they're English, or Canadian.”

Michael J. Nelson - Mike Nelson
Kevin Murphy - Tom Servo