has this feature as well as many others. This is what i use for Flashlight. It uses the camera flash though and is very bright. Others will chime in, i'm sure there's some free apps that only do Flashlight.
QuickLaunch is a must have application for every BlackBerry owner. With an interface that is seamlessly integrated with the look of the BlackBerry OS, QuickLaunch will create shortcuts to most any application on your device with ease and style. In addition the added functions included with QuickLaunch will enable you to delete several other apps on your device saving memory making QuickLaunch the 'Swiss Army Knife' of your Blackberry
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Maybe im mistaken but i think the original poster doesnt wanna use it as a flashlight but more as say a text message it would blink? i think thats what he means maybe i was mistaken but yeah