Type2Phone ($4.99) is one of the most practical tools in my development toolbox. It emulates a Bluetooth keyboard from your Mac. With it, you type to your iOS device using your normal desktop keyboard.
While this may not sound like a big thing for many iOS users -- after all, the onboard keyboards and new dictation features streamline text entry -- it is a huge deal for devs and IT coordinators who have to keep typing similar things into apps and settings, over and over again.
For example, take Game Center development. You usually work with many different accounts, testing to see how access works for new users, for those with a good his