this is one I saw as a kid, so I remember it fondly. it's not a bad little movie, though I said that about the Slime People recently, and when I watched it I was not as impressed. so perhaps I'll watch this one again soon. but I like the design of the robot here a lot.
it's got a good atmosphere to it, and a good cast. some of it's a little hokey, but it's got suspense as well. I have always wondered if 8th Man got his name from this movie, but it's not surprising if it's been used before as well.