If like me you were left a bit bewildered by the behavior of some of the characters in Prometheus (trying to make friends with a mutant alien cobra thing, getting lost in a facility you just mapped, trying to escape from a rolling circular spaceship by running in front of the [frick]ing thing etc etc) then this vid from Barely Political may clear up a few things!..
Prometheus is out now, and despite having a few WTF moments is actually pretty damn good.