Ubuntu Tweaks

HowtoForge has a great guide on installing and using the Ubuntu Tweak utility.
“Ubuntu Tweak is a tool that lets you change hidden Ubuntu settings, for example: hide or change the splash screen, show or hide the Computer, Home, Trash, and Network icons, change Metacity, Nautilus, power management, and security settings, etcâ€
It only works on Gnome desktops, but its a really easy way to customize your splash screen, desktop, and hibernation settings. The tweaks are virtually endless.
Link to tweaking hidden Ubuntu settings.
