The Day the Earth Stood Still
The Day the Earth Stood Still was a science fiction film released during the mid-20th century. The plot centers on a fictional postulation of what Humanity's first contact with an alien race would be like. Although the alien that arrived on Earth was a benevolent ambassador with essentially peaceful intentions, the mass public reacted with hysteria and paranoia at his arrival.

This film was among those in the motion picture library aboard  in 2152. 

While cooped up in the catwalk of Enterprise,  presented The Day the Earth Stood Still for movie night on a monitor in compartment five. ()

In 2153, after deciding against western movies, Tucker showed the movie to Charles, a Vissian cogenitor whom he'd befriended, knowing that it would be the first movie the cogenitor would watch. After watching the film, Charles asked Trip why Humans were afraid of Klaatu and his . ()

In 2259, Christopher Pike was watching this movie on a flat-screen TV at his home in Bear Creek, Montana while he was cooking breakfast. Batel made fun of him for watching it, just as he had done before. He then told her "What? It's a classic!" ()

Background information 
In reality, this film was directed by Robert Wise (in 1951), who also worked on The Andromeda Strain (1971) and  (1979), both of them also "first contact" situations.

Lawrence Dobkin, who directed the  first season episode  and guest-starred in the  fourth season episode , appeared in this movie, as one of several doctors tending to Klaatu (the latter of whom is the main character in the film). Reginald Lal Singh, who guest-starred in the TOS first season episode , appeared as a scientific delegate in the film.

In Captains' Logs: The Unauthorized Complete Trek Voyages, Michael Piller calls the basic plot of  an homage to this film, only "we're the aliens."

Although Klaatu's mission is to deliver to Earth a forceful warning against "extending your aggression beyond your planet," he asserts that those he represents have no interest in how Humans manage their own affairs. This assertion may be considered similar to Starfleet's Prime Directive.

The Spanish title for the movie is "Ultimátum a la Tierra" (literally "Ultimatum to Earth"), not being known for its original title. However, in the dubbed version of the episode , Tucker translates the original, literal title ("La Tierra Se Detuvo", literally "The Earth Stood Still"). Later, Tucker explains it is a fiction (commenting, "In fact, the Earth did not stand still"), keeping the literal translation, but adding confusion to a Spanish-speaking audience that might not be familiar with the original title.

The Italian title for the movie instead is "Ultimatum alla Terra" (literally "Ultimatum to Earth"), but, as opposed to the Spanish version, there has been no literal translation in the dubbing, with also the latter dialogue being adapted. (In the Italian version, Tucker states, "Sì, ma è una favola. Non abbiamo mai ricevuto ultimatum," which literally translates to "Yes, but it is a fable. We have never received ultimatum.")

External links 
 
 
 

de:Der Tag, an dem die Erde stillstand
fr:Le jour où la Terre s'arrêta
nl:The Day the Earth Stood Still
Day the Earth Stood Still, The