OK, so I'm not the biggest GNOME fan (I use XFCE) but no matter what you use, KDE/GNOME/XFCE/wtfever, I think everyone should have a look at this.
http://xfce-look.org/content/show.php?content=33744
It's just a concept, but it's definitely worth noting and it's generating a lot of buzz across the openDesktop.org subsites. A GTK+ theme has already been built.
