Been playing with AIGLX powered compositing on Xfce a bit and made an quick OS X like looking desktop.

xfwm theme: Exiguous
gtk theme: Industrial
font: DejaVu Sans Condensed 10
terminal font: DejaVu Sans Mono Book 9

I configured bash such that the prompt only shows the last bit of the path, I don't need to be told who I am at every command (I'll get a default prompt when working as root so it will still be obvious when I'm root), and I do like to see a bit more of the path than only the name of the directory.
PS1='`pwd | sed -e "s/\/.*\/\(.*\/.*\/.*\)/*\/\1/"` $ '
Try it, love it.

As you can see I got rid of pretty much all information I don't need (the xfce panel autohides, too!), now the thing that annoys me most is bright colors...