I liked it. I would like to re-watch it on Blu-ray to see if it that is better. I thought it was a good prequel.
1. What happened to the man who DNA recombined in the water?
2. It seems to destroy the rumor that the Predators engineered the Aliens.
3. I am currios to see what happened to the woman who went to the Engineers home.
edit:
I like Aliens 1,2 and Resurection the best. 3 was good but being in a penitentiary was not the alien world I liked in the first two.
In Resurection I did not like the ending too much with the hybrid.