I haven't seen it yet- waiting for it to go on pay per view. (paying half price and watching it in the privacy of my home--priceless!!) I am a huge Aliens fan and have all the Alien Movies so I am waiting with baited breath. It is the prequel to ALien. It shows what happened to the crew on the prometheus after the Alien attack. ALthough, there is no Sigourney Weaver or John Hurt in this one
I have now seen it and did enjoy it. Being an close observer of detail I noted a serious flaw in the plot which was revealed near the end of the movie. Aside from that it was overall, well done, at least in my opinion.