How to Train Your Dragon, Megamind, Prince of Egypt, Spirit (even though I got burnt out on it when I was young, and Kung Fu Panda [2].
All of these movies are stellar to different levels. The story, script, and character development have all brought something special out for me. As an example, in Stallion of the Cimarron, Spirit sees a mankind constructing a train-track which is headed in the direction of his prairielands. Suddenly realizing what this would mean for his pack, he breaks free from his restraints and liberates the other captivated horses with him, thus sending the train they were pulling down a steep incline. In the process Spirit was able to prevent industrialization from spreading into his home, and returned to the horses he was recently abducted from. A brilliant example of Dreamworks' enthralling storytelling faculties.
The Shrek movies are the only Dreamworks productions that I can ever remember not enjoying so much. The original had some nice poignant moments, but the sudden fandom and subsequent release of three or four other installments (I've lost track by now) made my intrigue subside.