Yet another reason to get rid of Windows OS is what you can see on this video. This cool GUI (Graphical User Interface) is called XGL and it's said to be next generation Linux so I guess it's gonna be totally free!
With all these cool effects it sure looks even greater than Mac OS X (although less smoother) but you never know what might come with the new OS X 10.5 Leopard since Steve Jobs promised alot more than what he had shown us on WWDC 2006.
Anyhow, I know I will be using it whenever possible.
- XGL snapshots [link]