The first official trailer for James Cameron's 3-D sci-fi flick, Avatar has been leaked.

The film, starring Sam Worthington, Zoë Saldaña, Sigourney Weaver, Michelle Rodriguez, and Stephen Lang, is due in theaters December 18.

Thumbs up to James Cameron for creativity and all, and perhaps he might even make us cry, like how he did with Titanic - but the creepy, slimy-looking blue people they "live through"? A tad disturbing, to be honest. Watch the tralier below:

[YouTube, TheDW]