Just want to clarify the details on the 3D version. There are 2 discs, and two 3D versions of the movie.
Disc One contains the normal 2D movie, plus a 3D version that requires a newer 3D compatible BluRay player and TV.
Disc Two has a 3D version that will work on (probably) any BluRay player and TV, and these require the use of red/blue glasses, of which, 2 are included within the case. The red/blue is much better than the red/green used over 20 years ago and allows for better colour definition and the 3D is pretty good. As I don't have a 3D TV, I can't compare it to the newer 3D version on Disc One.