Dolby 3D is used in Spiderman, Gringotts, Transformers, Despicable Me and at Disney, Star Tours (although, for some inexplicable reason, Star Tours glasses are not coated at the top so every time the ride dips, the screen dissolves into rainbow colors). In Orlando, only the theater downtown uses it. The glasses are expensive, but it also provides for a brighter and cleaner 3D effect than polarized glasses.