Signs

"So they fly half-way across the galaxy in an highly advanced spaceship, but they don't use their technology to take over the planet. You know what their weakness turned out to be? Water. I mean, if that's true, why go to all the trouble to invade a planet that's two-thirds water? Not to mention the rain."

- Samantha Carter

Sings is a movie about alien invasion made on Earth. Samantha Carter watched this movie once and found it unconvincing.