"It Came from Outer Space stands out from the 50's alien-invasion-movie crowd in so many ways that it's difficult to keep track of them all. For one thing, there's the portrayal of the aliens themselves. These spacefarers are a far cry from the Martians of War of the Worlds or Invaders from Mars, but they are equally far from the stern but benevolent Klaatu of The Day the Earth Stood Still. Of all the movie aliens of the time, I believe these are the most plausibly portrayed, the ones whose actions and motivations most closely resemble what one would expect from intelligent organisms in their position. They are neither villainous conquerors led by a diabolical megalomaniac (think Earth vs. the Flying Saucers) nor beatific missionaries of interstellar peace. They are reasonable beings who have gotten themselves into trouble, and who are willing to do whatever they have to in order to get out of it again. If that means treating the natives a bit roughly, so be it." - Scott Ashlin, 1000 Misspent Hours