Apple introduced Mac OS X Lion with a gradual shift towards iOS or an iOS-ish experience. Here is how you can wiggle, arrange, delete Apps on your Launchpad on Mac OS X Lion, pretty much like how you do on you iOS devices (iPhone, iPad or the iPod).
Launch Launchpad or do the three finger swoop-in.
Click and Hold on an App till they started to wiggle.
Now, you can arrange, group them into folders or even delete Apps.
Steve Jobs says that the Lion has been inspired by their efforts with iOS, resulting in an expanded use of multitouch gestures, an emphasis on iPad-like full screen applications and an App Store for OS X (which will also be coming to Snow Leopard). The Launchpad application launcher will give an iPad-like grid of icons allowing you to create iOS-style folders for applications and finally the all-new Mission Control will offer a unified view of all open windows, apps and dock. Expect the eighth major release of the world’s most advanced operating system; Lion to roll out in the summer of 2011.