I first read Edgar Rice Burroughs A Princess of Mars when I was a very young man. After reading it, I devoured the entire series of books in a matter of weeks. They were just that good.

I’ve always thought the books would make great movies and now that thought has been turned to reality by Disney with its upcoming big screen adaptation of the series: John Carter. The film, which is directed by Andrew Stanton, features what looks to be a good cast including Taylor Kitsch, Lynn Collins and William Dafoe.

The trailer was released on Apple’s iTunes this morning and we’ve got it for you today. In case you’re not familiar with the story, here’s a bit of the official synopsis to get you in the mood:

“The film tells the story of war-weary, former military captain John Carter (Kitsch), who is inexplicably transported to Mars where he becomes reluctantly embroiled in a conflict of epic proportions amongst the inhabitants of the planet, including Tars Tarkas (Willem Dafoe) and the captivating Princess Dejah Thoris (Collins). In a world on the brink of collapse, Carter rediscovers his humanity when he realizes that the survival of Barsoom (Mars) and its people rests in his hands.”

Check out the trailer after the break. John Carter arrives in theaters on March 9, 2012.

According to Variety, Willem Dafoe has joined the cast of Disney’s John Carter of Mars, which already includes Taylor Kitsch and Lynn Collins. In the film, which is being directed by Wall-E helmer Andrew Stanton, Dafoe will play Tars Tarkas, a fierce green Martian warrior, who’s unusual among his savage race for his ability to feel compassion and empathy.

In the film, which is based on the first of Edgar Rice Burroughs Mars novels A Princess of Mars, Tars develops an alliance with John Carter after Carter, a Civil War veteran, is miraculously transported, via astral projection, to Mars. Once there, Carter meets Martian princess Dejah Thoris, wins her hand, rediscovers his own humanity after the ravages of war, teams up with Tars Tarkas and eventually becomes Warlord of Mars.

And did I mention that Tars Tarkas is also about eight or ten feet tall with four arms and green skin? At least he’s that way in the book. Fortunately, this isn’t the first time Dafoe has been green in a film, so it shouldn’t be too much trouble for him. The real question is how will he play someone with four arms who’s that tall? Of course, he’s a very good actor, so I’ll bet he can pull it off — with a little help from some movie magic.