Slick iPad app intended for teaching, and certainly useful in that regard. But think about the writing and digital storytelling possibilities. Write or draw freehand, import photos or images, type text, record audio, share via email. Saves as a video (which captures process).
The best app for digital language experience that I have seen yet. Take pictures of experience with your iPad/iTouch/iPhone, import them into Click n' Talk, add text, record a student or anyone else reading the text or talking about the picture. Voila, personalized book in minutes for emergent or beginning reader.