The empty lockscreen in iOS makes for an interesting place to deploy jailbreak tweaks. In fact, it seems like we've seen an excess of them since Apple unveiled the lockscreen-based camera shortcut in their upcoming iOS 5.
The feature has inspired tweaks like CameraLock and FlashLock, which allow you to access the camera and its flash respectively, without having to unlock the device. Now there's a utility available that combines both tweaks into one package...