Who was reading: A toussle-haired geek (with a dollop of chic) holding his jaw fairly slack.
If he had the magical ability to manipulate or "bend" one element, it would be: Air, clearly. Why on Earth would he stand there with his mouth agape if not to facilitate the ingress and egress of vast air currents?
Silver Screen Slaughter-fest: Though hugely popular as a Nickelodeon TV show and book, M. Night Shyamalan’s film adaptation of Airbender was widely recognized as the biggest cinematic flop of 2010 for its flagrant abuse of the 3D medium and its racially charged but merit-blind approach to casting. Wrote The Onion’s A.V. Club, “If any movie ever warranted a class-action lawsuit against the filmmakers, it’s The Last Airbender.”
I actually saw the film (free screening, mind you) and I’d say it was about on par with Miranda July's Me and You and Everyone We Know. Make of that what you will….