FWIW, I enjoyed Prometheus even though the plot had some "Monster Movie 101" moments (e.g. "let's split up and go in different directions"). The Scriptwriters paid a lot of attention to the backgorund story of the first Alien movie and managed to create a convincing prequel to it, but there were still some holes that they may explain in the next one (which there will be going by the ending). I was inspired to get the first 3 Alien Movies on Blu-Ray: they come in a very nice box with a beautifully illustrated booklet and the HD transfer is first-rate.