Alien Vs. Predator Easter Egg - Bishop Returns

Before arriving in the Antarctic, the funder of the expidition Charles Weyland, is sitting at his desk in front of a computer. He uses a knife or similar pointy object and plays "chicken" with his fingers - Just like the android "Bishop" did in the second Aliens movie. Oh, and Charles Weyland's middle name - is Bishop. A clear reference to the android in the second Aliens.