What is Compiz Fusion ?
(taken from AboutCompizFusion Wiki page)
Compiz Fusion is the result of a merge between the well-known Beryl composite window manager and Compiz Extras, a community set of improvements to the Compiz composite window manager. Compiz Fusion aims to provide an easy and fun-to-use windowed environment, allowing use of the graphics hardware to render each individual window and the entire screen, to provide some impressive effects, speed and usefulness. The first Compiz Fusion developer release was Compiz Fusion 0.5.2 on August 13th 2007, shortly after Compiz 0.5.2 was released. First stable release of Compiz Fusion is 0.6.0 released on October 20 2007.
Compiz Fusion is an open-source software project, meaning anyone can use it freely and contribute.
It is important to note that Compiz and Compiz Fusion are not the same thing (see: Compiz Fusion Vs Compiz). There is close co-operation between the developers of Compiz and the developers of Compiz Fusion, though ; in fact, many Compiz Fusion developers are also Compiz developers.
Ubuntu Gusty Gibbon(7.10) comes with Compiz Fusion by default. You can enjoy it's beauty on ubuntu Gusty Gibbon. This video shows you about two New Compiz Fusion Plugins: Screensaver and Aquarium