Here is my desktop, with some little tweaks to create a more "custom" feel.
Changes:
Nebula wallpaper at native resolution of 1680 x 1050.
Apple Logo "pod drive" icon to replace the default Macintosh HD icon.
An iPod touch desktop icon, even though the touch doesn't show on the desktop I still like to see my iPod there. And, if it's not on me then it's connected to my iMac.
Bowtie installed using "Wet Floor" theme.
Adium installed and utilising the "Eclipse" theme giving a minimal appearance and showing only contacts who appear online. I have also installed the "Blackened" message theme (not shown) to compliment this theme. I will never use Messenger by Microsoft for the Mac again.
Custom Adium dock icon installed, which can be seen furthest right before the Stack split. This icon is animated and glows from blue to orange and the word "online" changes to "new IM" when someone sends you a message. A very professional looking icon for the dock.
Replaced the default gray, square edged dock with a black glass effect dock with rounded edges. I find the black glass effect makes your icons appear sharper, but it could just be my eyes.
Please click the thumbnail for a full screen view: