Just a while ago I wrote about a tweak that lets you change what app to launch from your iPhone lockscreen on iOS 5. What if you are one of the unfortunate ones (like me) who do not own an iOS 5 device. Superslider is your solution.
Superslider is a Cydia tweak that allows you to place any app in your lockscreen for quick launch just like in iOS 5.
The tweak is free and very simple to configure.