Well, here's my review: I was disappointed. This movie is somewhere between a 7 and an 8 out of ten, not bad but not nearly as good as it could have been.
Prometheus lacked the ambiance and suspense of Alien. Ridley failed to recreate his original mood. Beyond that, Prometheus tries to be a film with an intelligent plot, but it spends too much time on gratuitous visuals and gross "shock value" stuff to really make the story work. I don't mind suspending a little bit of reality in a film, but there's a limit, especially when the film is trying to take itself seriously.
The acting was pretty good, the visuals were spectacular and there were some interesting aliens. But this film will not leave a mark on history like its predecessors.