'who was that guy' could be answered by way of explaining his/her/its race as opposed to that specific Jockey found in A L I E N. I would prefer that the Jockey found dead in ALIEN not be addressed at all. I want Prometheus to ask as many questions as it answers. The beauty of ALIEN was the sheer and hollowed wonder of what we were presented with. For just a moment, humanity came in to contact with a species they know not of. That's heavy heavy shit and it questions everything about what we believe, God, our beginnings and ultimately our endings.
If Ridley can execute Prometheus in the same absolutely believable way he executed A L I E N I'll be beyond thrilled. What I love about the first film is how believable that crew was, how every day and real their dialogue was. What makes A L I E N....ALIEN is the perfect characters and how perfectly they were acted. I also hope that the same pacing of dialogue occurs, by way of people talking over each other in a realistic way. I'm just as excited to watch how people interact with one another as I am, what kind of nasty monster will be unleashed.
Sorry, veered off course a bit. This movie is a dream come true for me in so many ways.