They spend their time lolling around in skimpy loincloths, thinking about how happy they are, but inevitably their Edenic and slightly risqué tranquility ends when spaceships from the planet Earth roar down from the skies. The invaders raze miles of jungle in a fiery apocalypse, much like the one at the start of Terminator 2. Then they stomp around in massive robotic exoskeletons, much like the ones in Aliens. It's clear pretty quickly, then, that Avatar: The Way of Water, is a James Cameron's Greatest Hits: as the "Water" in the subtitle might suggest, several sequences come straight from The Abyss and Titanic.