iOS 5: There are plenty of great jailbreak hacks to boost Notification Center's capabilities, but not much available for those who haven't jailbroken their iPhones. Launch Center bridges that gap by using a clever workaround to add handy app and settings shortcuts to your notification drawer.
It works by providing a number of built-in, configurable shortcuts — such as launching a website, turning on the LED light on your phone and Googling the contents of your clipboard — and scheduling them as alerts. When the alerts pop up, you can just tap them to initiate the shortcut immediately or grab them anytime in your notifications drawer.
When you engage any shortcut, it opens up Launch Center to handle the action, which can take a few seconds and isn't ideal. Of course, this is because Launch Center is required to operate this way due to restrictions in iOS 5. These sorts of shortcuts would certainly work better in a jailbroken environment, since they wouldn't have to be routed through an app, but if you don't want to jailbreak and have a dollar to spare, this app can offer some handy functionality with just a few taps.