This is my desktop.
I'm using Ubuntu Linux Desktop 8.10 Intrepid Ibex 64 bit with Compiz-Fusion + Mac4Lin + Cairo-Dock. I also use some useful and handy applications such as Katapult and Yakuake.
I've been using Ubuntu Linux for almost one year. Since I started using it, I've never felt that I need MS Windows. I, in fact don't want to use Windows again. Ubuntu Linux is securer, handier, easier to use, more stable and useful than Windows, I think. Well, I don't mean I'm absolutely right yet it is just my opinion and what I've felt.