Mopho DJ is a impressive new method of digital scratching which uses an iPhone placed on a physical turntable to gather accelerometer and gyroscope data.
Users are able to set multiple alarms at once; set daily, weekly, or monthly reminders; wake using fade-in mode, music, vibration or a user's own MP3 music.
These are instructions on how to replace the signal strength bars on your iPhone with a numerical representation of reception strength. (ie. numbers instead of bars)
Check out this mini fridge that can be controlled by an iPhone to automatically select a type of beer, aim via a webcam, and then shoot out the beer using an air cannon.