Ubuntu Customization Guide v2
Avid Linux Blogger Dark Star just made an amazing guide on how-to customize Ubuntu Linux. It’s 100% Compatible with Gutsy Gibbon 7.10 and shows you not only how to get widgets and the compiz fusion effects set up and working but also teachs alot on using AWN Windows navigator and how to mess with system sounds, Themes, Splash Screens, etc.
If you want you linux looking alot less like well…. linux then check it out here at the Tux Enclave