Coming via BigBoss repository NoLockScreen makes the iPhone lockscreen disappear. So no slide to unlock, no one touch unlock, but as soon as you press the power button to wake the phone, it dives into the springboard.
For iOS 3.2+ the hack is completely flawless and we tested it on iOS 4.1. However for older versions of iOS you would see the locksceen for a second before it disappears and makes way for the springboard icons directly.