Just saw it, was just about to create a thread.
Started of spectacularly then as the movie progressed it turned into some B-movie that was completely different from what i first thought was gonna happen.
Storyline went downhill fast for every minute the movie passed.
Many strange things in the movie like her having a "baby" for no reason at all.
(i know how she got it)
Edit: really the only way for them to have that last scene was because of the infestation.
It had absolutely no logic applied to it and was merely there to show the Alien vs Predator scene.
The only upside of the movie was the Geologist and Biologist.
They were funny as hell.
It had the potential to be astonishing but it turned into crap frankly.
Bit too much on the religious side, word god was mentioned 500 times, crosses shown 200 times.