* The First Daughter's deadpan line after the Martians wipe out Congress in their ''second'' slaughter on our planet's soil:
--> '''First Daughter''': Guess it wasn't the dove.
* "They blew up Congress!"
* "Do the Martians have two sexes, like we do?" Asked by a reporter of AmbiguousGender.
* [[BlatantLies "Don't Run, we are your friends."]]
* "I want the people to know that they still have two out of three branches of the government working for them and that ain't bad."
* "We have to strike NOW, sir! [[AxCrazy Annihilate! Kill! Kill!"]] "Shut up! [[BigShutUp SHUT UP!]]"
* "Whoa! He just made the international sign of the donut!"
* "Ello, Maurice. Ça va?"
** (listening to the Martians massacre the French government) "Mon dieu..."
* The scene where it looks like Franchise/{{Godzilla}} is attacking a major city. Turns out [[spoiler:the Martians are just watching [[Film/GodzillaVsBiollante a Godzilla film]] on their viewing screen. Then they changed the channel to ''Series/TheDukesOfHazzard''.]]
* The DVD has an optional language track...in Martian.
* The Martian Emperor speaking in a high-pitched voice after inhaling the absorbed nuclear blast.
* "''Rooooooollexxxxxx!''"
* It's a blink and you'll miss it moment, but when Byron challenges the Martian Ambassador to a fight, the latter removes his cloak and reveals what looks like a ''championship belt''. Just imagining the oddly proportioned Martians boxing frequently is just.. Really odd.
* One of the darkest jokes in the movie, the little dog running off with [[spoiler:Michael J. Fox]]'s hand, all that's left of him after being vaporized, like it was a bone.
* In the very last scene, within the destroyed ruins of the house, one woman is nonchalantly dusting.
* As the saucers start falling from their occupants dying, the annoying, yapping chihuahua, now having its head on its owner's body, takes the chance to strangle a random martian in the UFO, while still ''endlessly yapping''.