Sigourney Weaver and Giovanni Ribisi battle it out in this new Avatar clip, arguing about about money and blue aliens, ultimately revealing how the Na'vi learned English, and each party's secret motives.

Sigourney Weaver plays the Na'vi sympathizer, Grace, and Giovanni Ribisi plays the money-hungry CEO, Parker Selfridge. It's actually pretty fun to see Ribisi in this sort of role. Either way, now we know how the Na'vi learned English and that there had been better relations between the two species, until now... but why?

[via MSN]