I'm somewhat convinced that the Elmo Potty Time DVD taught my kids to use the toilet. So I was really excited to see the Potty Time With Elmo app ($3). Based on the book, rather than the DVD, the app includes the story of Elmo teaching his doll how and when to use the toilet through a storybook. There are also five potty-themed songs (e.g., "I Am Waiting on the Potty" to the tune of "I've Been Working on the Railroad," etc.), some jigsaw puzzles, and a rewards chart that unlocks new stickers as actions are completed. For the lil Elmo fan out there, this app may be all that's needed for potty training.