Alien vs Predator never happened.
Still the best sci-fi/horror I've seen in a long time...
The self-operation scene to remove the Alien is both gruesome and absolutely insanely good! Instant classic.
It's been left very open at the end I'm really excited about a sequel, if you think about the movie for a bit a lot of the things do add up, it just doesn't hand you everything on a plate like most Hollywood rubbish does ;-)