Scientists everywhere dream of the day when they make first contact with an unknown alien species. Will they be intelligent? Will they be able to communicate with humans? Will they be interested in sharing their knowledge of advanced technology and space travel? Will they blow us up with heat rays and other horrifying weapons? Here are five alien first contact movies in which the answer to the last question is an unambiguous "yes."


"Earth Vs The Flying Saucers"

Most first contact movies in which the alien life forms are hostile spell that out right in the title–and "Earth Vs The Flying Saucers" is no different. Basically, humanity's "first contact" with the aliens in this movie consists of them blowing up all of our stuff. And thanks to the stop-motion special effects work from Ray Harryhausen, the aliens' flying saucers are probably more likeable than any of the humans in the movie.


"The War of the Worlds"

In the most famous scene of George Pal's classic 50's science fiction "The War of the Worlds," a trio of humans approach an unknown alien spacecraft, hoping to usher in a new era of Earth-Mars relations. Instead, they get fried by Martian weaponry too advanced for any human to understand. Things get worse from there as the Martians wreak havoc on Earth as part of their effort to invade.



Of course, not all first contacts with aliens have to take place on Earth. Take the unlucky space jockeys that make up the crew of the Nostromo in Ridley Scott's horror scifi classic "Alien." They make first contact with a terrifying species that seems specially designed to be a killing machine–then, shockingly, they proceed to get picked off by that "machine" one by one.


"Mars Attacks!"

Designed as a kind of smirking 90's parody of 1950's science fiction movies, Tim Burton's "Mars Attacks!" depicts humanity all too willing to communicate peacefully with Martian visitors. They keep saying they "come in peace," but the bright red and green death rays tend to contradict that message. You know things are bad when the alien visitors don't even respect donuts.


"The Day The Earth Stood Still"

Here's an interesting case of "bad for humanity" being open to interpretation. On the one hand, the alien visitors in "The Day The Earth Stood Still" have humanity in a totalitarian death grip–promising to destroy us if we continue misbehaving with nuclear bombs and other dangerous weapons. On the other hand, what better way to ensure peace than a terrifying robot police force?