Filmmaker James Cameron and others describe how the Avatarcame to life in this new Magic Kingdom attrion.\r<br>\r<br>--\r<br>\r<br>SUBSCRIBE to ABC NEWS: \r<br>Watch More on \r<br>LIKE ABC News on FACEBOOK\r<br>\r<br>FOLLOW ABC News on TWITTER:\r<br>\r<br>GOOD MORNING AMERICAS HOMEPAGE:\r<br>
