Forbidden Planet ~1956

This film made in 1956 is a cult classic of sci-fi that is a must for anyone.  It help influence Gene Roddenberry to create Star Trek and many other areas of science fiction.  It may seem outdated for today's standards but if you look past that you would see a movie worth buying and re-watching in the future.  Plus did I forget to mention it's in color.

Trailer:http://www.youtube.com/watch?v=8y4crGU7dkg

References:
http://www.associatedcontent.com/article/1651535/gene_roddenberry_tv_movie_influences.html
http://www.rottentomatoes.com/m/forbidden_planet/
http://www.imdb.com/title/tt0049223/