I can't believe that no one mentioned
"Forbidden Planet". This iconic science-fiction film from
the 50's certainly has it's place in the history of this genre. "Forbidden Planet" is often credited as being Gene Roddenberry's inspiration for
Star Trek and, as such, is certainly one of the most influential science fiction films to date.
This flick had it all. From a classic "flying saucer" , a great robot and great special effects (for it's time) produced by Disney studios. If you
haven't seen "Forbidden Planet", it is certainly worth the time.
[edit on 12/2/2007 by benevolent tyrant]