AutoLock automatically locks the BlackBerry keyboard after the backlight turns off, optionally waiting a configurable delay after the backlight shuts before locking the keys.
To enable/disable or set the delay, go to Options->AutoLock
Blackberry Backlight Utility - I often have problems keeping my back light on when I'm waiting for an email to arrive or when I'm reading an e-book. I know I can always jog the wheel up and down but its just a pain to do it when you just want focus your attention on something important.
Here is a simple utility that keeps your backlight on until you want to turn it off
BLight is a great companion to any Blackberry. Have you ever tried to use your phone to find your way across a room or your keys in your bag? BLight is for you! Unlike other flashlight applications, BLight uses your Blackberry''s built-in high powered status LED to illuminate the area. Using the screen or your video camera light will drain your battery quickly