I had heard nothing good from the reviews and someone gave me a cam copy so rather than go to the cinema, I watched it at home. There was so much wrong with it. Despite the gory horror of the two sources, it was a predictable softcore monster mash. The rules of the Predator were picked up and dropped at will, and the chestbursters became chestnudgers, emerging carefully and relatively blood-free and became fully grown selectable characters in minutes. I just waited for characters to die, and the Queen big fight scene had my eyes rolling. The aliens and the Queen seem to both be more like the Raptors and T-Rex from Jurassic Park.
It ended and I thought "Well, Paul WS Anderson directing, PG-13 rating... What was I expecting?"