This 18th December, the most expensive Hollywood movie "Avatar" written and directed by veteran director James Cameron is going to release all over the world. The filming took more than 4 years and the idea came to James Cameron's mind some 14 years ago. This Sci-Fi thriller is full of 3D animations and 3D effects. For filming Avatar, special 3D cameras were invented to make the movie worth watching and look realistic. The PC game,James Cameron s Avatar: The Game 2009 is already in market with huge possitive responses.