Did you know what 'Klaatu barada nikto' is?

I'm starting a new section "Did you know" where I'd share stuff I find interesting.

So, do you know what "Gort, Klaatu barada nikto" is?

It is considered the most famous science-fiction phrase ever. It has been quoted in almost all important science-fiction movies and not only.

It's from the 1951 movie called The Day the Earth Stood Still. It was said as a safe word to stop a robot from destroying the earth.
Gort was the name of the robot.

More on the subject: http://en.wikipedia.org/wiki/Klaatu_barada_nikto