Penny Arcade Expo? You might want to consider adding Proxima Labs' "The Conventionist" to your list. The free iPhone app includes a full, interactive schedule for each day of the expo, a map of the convention center and the ability to browse through both while offline. Which is fortunate, since large crowds of tech-savvy people have a tendency to wreck your phone's 3G functionality.
Best of all, the app can be updated to provide support for other conventions as well. We sure hope the the 2010 Des Moines Apple Butter Festival makes the cut! We always get lost between the cider mill and the ol' birch tree.