there be a lot of 50 sci fi movie . they be big draw for the drive in theater . a lot of them be crappy even back then . this movie and the day the earth stand still stand out and and both have age well in their own way . from the very begin with it eerie theremin musical score ( which still sound weird since theremin be hardly ever use ) forbidden planet take you where no man have go before . speaking of star trek there so much material in this film that get into star trek tos it like a pilot for the series while from the interactive captain or first mate or doctor and the mad scientist and alien being and babe in short skirt and computer intelligence while it be all de rigeur now but this be the first of it kind . besides and it have good acting and well do artwork which even today evoke a certain awe at the imagery . consider how the huge krell machine be successfully depict with some real depth . i saw this a a kid ( at a drive in represent0 ) when it be a new movie and it scar me . of course every movie that be even vaguely scary do back then but i remember be real worry about the invisible monster . forbidden planet be a movie a sci fi fan can watch several time and find something new with each viewing .