There are heaps of cool things that are exclusive to owners of Jailbroken iPhone’s and this is definately one of them.
Developed by Ryan Petrich, DeepEnd is a free Cydia app that uses the iPhone’s accelerometer to add a 3D effect to your homescreen. When you move your device, the background moves with it, producing the effect.
Now, this has been done before by another Cydia app called 3DBoard, but it cost $4, and this is free.
If you’re jailbroken, just add this repo to Cydia:
And if you’re not, you can see the app in action below.
Oh, and I wouldn’t be surprised if it chewed through your battery fast.