Originally Posted by MetroStyles
Weather Channel - Much better than native weather app.
MyWi - Requires jailbreak. Use your phone for tethering (provide wireless to your laptop through your phone).
Backgrounder - Jailbreak only. Without this your phone is useless. Allows multitasking of an unlimited number of apps.
SbSettings - Allows for quick one-swipe access from any screen to a dashboard that controls brightness, rotation toggle,...