You can’t find this kind of apps in the App Store!
OverBoard – 1.99$
LockInfo – 7.99$
Customize your lockscreen to get the information you need, when you need it. LockInfo gives you access to all of your important information right on your lockscreen. LockInfo supports plugins to expand the available information for your lockscreen.
Quake 3 Arena HD (FREE)
Coming in at 1024×768, you can play online or offline, and features onscreen controls. There is some setup required, as per usual. If you need help setting things up, then you can follow the information provided in the package on cydia.
iControl – 4.99$
iControl will automatically manage the usage of your WiFi, 3G, Bluetooth, and 2G radios on your device, in order to maximize the battery life of your iPhone. iControl allows you to set App-Specific rules, keeping it customized to your liking.