Beating a dead horse, but these are practical effects from before WWII that look more plausible than the CG hackery in multimillion dollar productions from now. That's just pathetic.
This is one of the greatest works of art ever produced by the American empire, even though the director and all the cast were British/European. It might wind up being the closest thing we leave behind to a Sistine Chapel.
Even funnier when you know that homonculi were traditionally supposed to be made by ejaculating in a test tube and boiling the mess with burning horse manure.