What a great story and concept to only be dragged down by these directors who think they must discomfort us for three hours when only two was necessary. The IMAX Real 3-D was amazing and should not be missed. We get the story and the plot, but it seems directors think we are to slow to catch one, thus the yawning commences. Same as with Twilight New Moon and Transformers (Revenge), we are a lot quicker than given credit, so get on with the movie. If this was two hours long I would give it 4 stars, but the extra hour of fill material sets it back another star. 3 and thats being nice.