Forbidden Planet was released in March 1956. I will never forget how awestruck I was as a youngster the first time I saw the great machine of the Krell and learned what an id was.
This is the movie that inspired Star Trek creator Gene Roddenberry and no telling how many other film makers. (How many of you missed the nod Joss Whedon gave Forbidden Planet in "Serenity"?)
The effects are the most outstanding of their day and still look good today.
This is one of the great classics of Science Fiction.
Check out this nice
article about the film.