Favorite SF Movies?

Somewhat offtopic but a few of these have robots in them:

Day the Earth Stood Still Earth vs the Flying Saucers Day of the Triffids Invasion of the Body Snatchers (original version, though the remake is not bad) They Came from Outer Space (1953 version) Kronos This Island Earth (after watching it you are required to build an interrocitor) Alien Forbidden Planet Iron Giant

and finally, because it's relevent for today,

Soylent Green

I have left out the supremely obvious ones like Star Wars, Terminator, Matrix, and Star Trek

-- Gordon