Which can be a dangerous thing sometimes.
In terms of UI though I'd seriously recommed you download Blackbox for Windows
http://www.bb4win.com . It's just so much more streamlined than anything I've seen Microsoft come up with. For example, when I right click on empty desktop in Blackbox, I get a menu (that I customized myself) that starts out with Programs (Start-> Programs), next on the list is Desktop (where I can acess any program that has a desktop icon), then a series of menus organized into Art (for Art programs, duh), Games, Internet, etc. I find it's just way handier than the Windows UI, and when I have to Windows at work I constantly find myself wanting to bash the keyboard in fustration over how much more cumbersome the interface is.