WinDirStat -- Hard Drive Cleanup

I don't know how I missed this one. You know the problem -- no matter how much hard disk space you have, you always ends up with just 1 gig free on it. How do you find out what's taking up all the space? Enter Win Dir Stat -- "WinDirStat is a disk usage statistics viewer and cleanup tool for Microsoft Windows" from their creator. You can check it out here. I particularly like the pacman status display.