Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
In terms of customizability, I can honestly say that the Linux desktop is far better than Mac OS X or Windows. In Linux, there are tons and tons of desktop environments, window managers, icon sets, and different applications readily available for easily customizing or tweaking the overall desktop look and feel. Although it's possible to change the appearance of Mac and Windows desktop, the options for doing so are quite limited.
So that we can fully appreciate the flexibility of Linux, I gathered several awesome-looking desktop customization screenshots (with short details) from the web that I would like to show to all of you. I hope that these screenshots will somehow arouse your creativity and inspire you to transform the appearance of your desktop into something that's also amazing.
Without further delay, here are some impressive Linux desktop customization screenshots:
1. Gnome Seven for Gaia by Izobalax
GTK & Metacity - Gaia 09 by fkant
Icons - Gaia Icons by *imrik
Wallpaper - One by *imrik
Other - Pidgin, GQview, Thunar, Banshee, GIMP, Rainlendar, Screenlets