When I've started working on Mac OS X with Core Animation, I was impressed by an Example (I don't remember the link, if someone knows it, post it in the comments! thanks)... Very few lines of code for a great effect.
After a year, or probably more.. this example was came back to my mind, so I've decided to clone using Qt. And below you can see a short Demonstration Video. Your desktop jump away.. full screen is fantastic :)
The Source Code is Available Here: Qt4 Jump Away Animation Source Code.