Check out the teaser trailer for James Cameron's Avatar

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Dec 14, 2012, 3:54 PM EST

As we reported earlier, the trailer for Avatar went live yesterday morning at the Apple QuickTime Movie Trailers site—though there were a few bumps along the way. For those of you who were having trouble seeing the teaser for James Cameron's 3-D epic, we've embedded it here.

Avatar is the story of an ex-Marine thrust into hostilities on an alien planet filled with exotic life forms. As an "avatar," a human mind in an alien body, he is torn between two worlds in a desperate fight for his own survival and that of the indigenous people. Avatar opens Dec. 18.