Amazing special effects particularly in 3D on the IMAX screen. Well worth it even though you get a little bit of eyestrain during this long movie. It sets the new standard for computer generated effects. Loved it and definitely would recommend that everyone see it on the big screen first. The only thing that keeps me from a five star rating is the slightly cheesy dialogue in some spots and a little bit of stereotypical two-dimensional characterization. Other than that, a great movie!