Forbidden Planet (aka Fatal Planet) is a 1956 American science fiction film from MGM, produced by Nicholas Nayfack, directed by Fred M. Wilcox and starring Walter Pidgeon, Anne Francis, Leslie Nielsen, Warren Stevens, Jack Kelly, and Robby the Robot. Forbidden Planet is the first science fiction film in which humans are depicted traveling in a faster-than-light starship of their own creation. It was also the first science fiction film set entirely on another world in interstellar space, far away from planet Earth. Forbidden Planet is considered one of the great science fiction films of the 1950s, a precursor of what was to come for the science fiction film genre in the decades that followed. The characters and isolated setting have been compared to those in William Shakespeare's The Tempest. Its plot contains certain story analogues to the play. There is also a reference to one section of Carl Jung's theory of the collective unconscious. Wikipedia
Altaira: (swimming in a pool) Come on in.
Commander John J. Adams: I didn't bring my bathing suit.
Altaira: What's a bathing suit?
Commander John J. Adams: (quickly turning his back) Oh, murder!