Deliberate mistake: When Selfridge says "Pull the plug" after Hometree is destroyed, two soldiers, one male and one female, go to shut off Jake and Grace's avatar links. The female soldier goes straight to Grace's link and terminates it, but the male soldier gets delayed (punched by Norm) before he can terminate Jake's link. This is deliberately shown out of sequence - we see Jake's link terminated before Grace's. The result is that we see Grace's avatar fall unconscious when Jake's link is terminated, and Jake's avatar fall unconscious when Grace's link is terminated.
Avatar (2009)
1 deliberate mistake
Directed by: James Cameron
Starring: Sigourney Weaver, Giovanni Ribisi, Zoe Saldana, Michelle Rodriguez, Sam Worthington, Stephen Lang, Joel Moore
Continuity mistake: In the scene where Parker is shown playing golf on the indoor golf course in RDA, the first time he hits the ball, there are two other balls lying on the course side by side. In the next shot, two are distant apart and in the shot after that, they are in their original position. (00:12:15)
Jake Sully: Look, at first it was just orders. And then, everything changed. Okay, I fell in love. I fell in love with the, with the forest, with the Omaticaya people, with you. With you.
More trivia for Avatar
Question: There is a scene where Parker is telling Grace that the piece of ore he is holding, called "unobtainium", is why they are on Pandora. This same ore was used in the 2003 movie, "The Core", to build the manned drilling machine to bore through Earth, to the core. Was the use of the same ore name in Avatar, done with permission from the earlier movie? Or was it a mistake?
Chosen answer: The Core didn't originate the name - it's been used since the 50's and even has its own Wikipedia article at http://en.wikipedia.org/wiki/Unobtainium. There it's described as "any fictional, extremely rare, costly, or impossible material, or (less commonly) device needed to fulfill a given design for a given application."
Jon Sandys ★