The Hunger Games return with such a sequel twist that you can't believe writer Suzanne Collins didn't think of film when writing. Catching Fire builds up with all types of subversive messaging which is interesting but also brings into relief the limitations of the genre and film.
All the animals shown on Pandora have six limbs (Ikran and Toruk each have four wings and two back legs).
This is the first and only (as of 2010) James Cameron film not to feature nuclear weapons.
The special effects he wanted increased the budget to $400 million. No studio would fund the film, and it was shelved for almost 10 years.
As of 2010, James Cameron's 'Avatar' is currently the highest domestic and worldwide grossing film of all time.
James Cameron explained that he chose Sam Worthington (an unknown at the time of casting) because he felt that Worthington seemed like a cool guy the kind of guy who "you'd like to grab a beer with."
At one point Michael Biehn was set to be involved in the movie, and Sigourney Weaver was set to play a character named Shipley. Changes were soon made once James Cameron feared that people might assume Avatar was just another Aliens.
The Wilhelm Scream can be heard twice in just the final battle alone: the first time is when a soldier is crushed between to pallets of explosives in the shuttle, the second when an AMP suit is crushed by a raging hammerhead beast.
Many of the sound effects for Pandora's fauna are recycled from Jurassic Park.
The handprint warpaint seen on Neytiri's chest during the final battle has five fingers, a sign that it's from Jake's Avatar since real Na'vi only have four fingers.
Grace's Avatar wears a Stanford University shirt throughout the film. Stanford was Sigourney Weaver's alma matter.
James Cameron originally planned to have the film completed for release in 1999.