Editors' take: Toy Story Read-Along is the model for how children's e-books should be done. This highly interactive app from Disney leverages the iPad's potential like few others. Not only does it read the story out loud, it also allows your child to record his or her voice and become the narrator. Each animated page features tap-to-play sound effects and character voices, and some can morph into coloring pages, complete with simple onscreen coloring tools. Songs, movie clips, and mini games round out the experience. Amazingly, the app is free (meaning it's a must-have), though Toy Story 2 Read-Along (and, presumably, future Disney titles) will run you $8.99.