Science fiction on the big screen may be like no other genre.  The seemingly impossible comes to life as filmmakers predict the future–sometimes positive and exciting, sometimes bleak and full of unspeakable horrors.  Whether these movies show us how humans may live in the future, or who else may be sharing our galaxy with us, or what galaxies we may never confront, science fiction takes storytelling and gives us a vision of the future.

So if you had to select one scene, or even better, one image, that best defines the science fiction genre in movies, what image would you choose?  Select your choice from these iconic images in the below poll and see if others agree.  If you think we’re missing an iconic image, let us know by posting a comment.

Dave confronts Hal in 2001: A Space Odyssey

Our first look at where the creature has been hiding in Alien

Ripley confronts the queen alien in Aliens

Marty McFly sees the time machine work in Back to the Future

Deckard is taken to the police station in Blade Runner

The mother ship arrives at Devil's Tower in Close Encounters of the Third Kind

Daniel Craig gets to use an arm gun in Cowboys & Aliens

Gort arrives on Earth in The Day the Earth Stood Still

The slave ship hovers above South Africa in District 9

Snake Plissken shoots up the place in Escape from New York

Eliot and E.T. take a ride across the moon in E.T., the Extra-Terrestrial

Leeloo arrives in Corbin Dallas's cab in The Fifth Element

We get our first look at Robbie the Robot in Forbidden Planet

The aliens zap the White House in Independence Day

Donald Sutherland is finally taken in Invasion of the Body Snatchers

Tony Stark test drives the Iron Man armor in Iron Man

Alex Rogan gets to be a Starfighter in The Last Starfighter

J makes these look good in Men in Black

The robot is revealed in Metropolis

John Anderton shows us some cool new technology in Minority Report

Charlton Heston in the big reveal from Planet of the Apes

Johnny Rico takes down a bug by himself in Starship Troopers

Our first look at the Enterprise refit in Star Trek: The Motion Picture

Admiral Kirk screams at Khhhaaaan in Star Trek II: The Wrath of Khan

The death of Spock in Star Trek II: The Wrath of Khan

Kirk and Spock return to 1980s San Francisco in Star Trek IV: The Voyage Home

Worf's promotion ceremony is interrupted in Star Trek: Generations

The Star Destroyer appears overhead in Star Wars

Our first look at Darth Vader in Star Wars

Luke dreams of space on Tatooine in Star Wars

We get to marvel at Yoda--a muppet that looks real--in The Empire Strikes Back

Luke, I am your father -- from The Empire Strikes Back

Sarah Connor beats the Terminator in The Terminator

We meet the new liquid terminator in Terminator 2

Arnold takes another guy's leathers in Terminator 2

The creature appears in The Thing from Another World

Arnold reveals his disguise in Total Recall

The rocket arrives at the moon in A Trip to the Moon

Flynn is zapped into the Grid in Tron

Quorra hangs out at Flynn's place Tron: Legacy

C.J. Bunce