VivisectedEngineer There is bound to be a lot of "borrowing" with Sci Fi movies. After all, it seems to be about the human condition and a sense of wonder. There was Metropolis, but if we really want to nit pick, it is arguable we owe it all to the first known sci fi movie, "Le Voyage dans la Lune". I actually watched it and ultimately liked it for its ideas (not the limited production of its time. You have to work with what is available).