I'm using "LED light" from the market. It seems to be the most basic flashlight app that doesn't require much usage of the phone. It's a simple vertical off - on widget switch. Has a 1.5 second delay after you switch on.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?