Prometheus, although it's agonising to watch or think about, as it's a colossal missed opportunity: Change of tack for the series to delve into the Space Jockey race, themes of creation and (to an extent) AI, teasing on the possible origins of the alien (which I would have preferred as an engineered hybrid of about four horrific natural organisms with each possessing a different characteristic of the Xenomorph product).
Love the ampules and the idea of the black liquid being a combination of the transparent 'DNA-catabolic' liquid we saw in the opening scene and Xenomorph DNA stolen, like fire, by the Engineers from the mysterious true Space Jockey race in some indirect way. Upon activation, the ample acts as a cocktail mixer, combining these two ingredients similarly to the analogy of David shaking the cocktail mixer earlier. And the unwitting host being the third 'ingredient' to help produce something resembling a facehugger, or mutate them horrifically, depending on ingestion or bodily exposure.
Would also have liked to have seen David respond to Weyland with a micro-expression of smirk: 'I'm paraphrasing, I'm afraid, Sir; however, roughly-translated, he says his people made you because they could'.
The film feels about half-complete to me with respect to ideas and no fully-clear direction. Is it good enough to simply *say* 'where we did we come from?', rather than *ask*, as well as provide meaningful thought beyond 'science is what I believe it to be'?. Not certain.