GraviBoard is a brand new Tweak in the works right now by conradev, once actived it will make the icons lose gravity ! There is no word on Release yet from what we know it is still a little buggy and is getting worked on. Even when the icons are floating around they are still functional .. Below is a video of it in action.

update x1 – Feb-20-2012 :  Graviboard now works on iOS 5.0