DreamWorks Animation is an American animation studio which has produced a series of critically and commercially successful computer-animated films, including Shrek, Shark Tale, Madagascar, Over the Hedge, Bee Movie, Kung Fu Panda, Monsters vs. Aliens, How to Train Your Dragon, and Megamind, among others. It was formed by the merger of the feature animation division of DreamWorks SKG and Pacific Data Images (PDI).