eros said:

pointless opening scene.

Huh? How could it be a pointless scene to show how the engineers sacrifice themselves to create life on other planets, using the black ooze that is shown later in the film? Do you know the myth that inspired the film's title? I mean, I thought the film was pretty bad, but I don't get people who make lazy criticisms like this without backing their opinion up. Explain WHY it was a pointless scene.

Anyone who want a GOOD critique of the film that explains what's wrong with it from someone who knows what he's talking about, check out Gavin Rothery's blog (VFX supervisor of MOON): http://www.gavinrothery.com/my-blog/2012/6/11/so-what-was-wrong-with-prometheus.html