This tutorial shows how you can enable Compiz Fusion on a Fedora 8 GNOME desktop (the system must have a 3D-capable graphics card - I am using an ATI Mobility Radeon 9200 here). With Compiz Fusion you can use beautiful 3D effects like wobbly windows or a desktop cube on your desktop.

http://www.howtoforge.com/compiz-fusion-fedora8-ati-mobility-radeon-9200