Proloquo2go, the best selling medical and educational app of 2009, has created a lot of enthusiasm among speech language pathologists, parents and people struggling to communicate. For some, like Beth and Andrew Patitucci, the app has provided a pocket-sized alternative to bulkier communication devices at a fraction of the cost.
Guide to mobile learning with the iPod/iPad
User created list of iPod and iPad apps. Lots of good stuff here.