Lifehacker: Best Desktop Customization Tool?

LIfehacker is having a vote and discussion on the best tool to customize your desktop.  

"Sure your computer's desktop may be functional out of the box, but some of us need to put the 'P' in PC before we really feel at home at a computer. We love looking at how our readers havecustomized their desktops, so for this week's Hive Five, we want you to share your favorite desktop customization applications. Keep reading for more details and to nominate your faves in the comments."

Head over to Lifehacker and check out the discussion so far, and cast your vote for your favorite tool.