Everything was beautiful, even the weapons. In "Alien", when they were using those machines that they put themselves into, those giant robotic forklift things,I thought they were cool, but clumsy and very limited. The ones in Avatar were elegant and had a range of motion that was breathtaking. They were a magnificent melding of machine and human with very fast reflexes, running and jumping ability. Even the helicopter-like things with the side counter-rotating rotors were mesmerizing. They reminded me of the steampunk machines in The Golden Compass that looked strangely futuristic and historic at the same time.
The planet was stunningly developed, I always thought the movie Legend would be hard to beat for beauty, but the glowing phosphorescence of the plant life against a dark sky reminded me of private underwater realms that we rarely see.
I hope you all get a chance to see it- I will not spoil the plot but I hope to see it in 3-D soon at the IMAX theatre.