What are the best sci fi movies of the 1950s?

The Day The Earth Stood Still - To me, still the definitive sci-fi film

Forbidden Planet

Planeta Bur - From a Soviet Union perspective, but still really good sci-fi. "First Spaceship on Venus" doesn't do the original justice...

Gojira - The original Japanese version, if you want to consider that sci-fi...

Them! - Another monster/sci-fi..

The Thing...

Earth vs The Flying Saucers - Just fun w/ Ray Harryhausen effects

This Island Earth - Dam MST3K! lol...

Devil Girl From Mars - ya gotta love it!

The Day The Earth Caught Fire

Anyway, those are a few of my favorites, hope that helps...

The War of the Worlds (1953)

Them! (1954)

The deadly mantis (1957)

I recall another film that had the phrase "from Planet X" in its title.

50s scifi is kinda cheesy so thinking of a few i be conscious of of ..... the mind-blowing shrinking guy the element[from yet another international] them! [and of direction day the earth stood nonetheless,forbidden planet ,and so on...] the worst one and maximum enjoyed [as its sooooo corny -I quite have this] is plan 9 from outer area ......bloody hilarious

"Plan 9 From Outer Space"