And the single iPhone app that amazes more people than anything is Shazam. I installed an iPad version of it when I first got my iPad, but just like the scanner, Shazam is so valuable because you have it in your pocket. What Shazam does is it listens to music playing, then analyzes it and then tells you the name and artist of it. It works VERY well. You would need to have a headphone with mic plugged in for it to work on the iPad, but for those unfamiliar with it, I couldn't live without it.