Spacemonger: Your Hard Disk Represented as a Treemap

While we're on the subject of treemaps, I want to let everyone know about Spacemonger (freeware for Windows), which is a nice visualization of your hard disk using a treemap. It shows you at a glance what big files or directories are eating up the space on your hard drive. Great when you're doing some spring cleaning.

A few days ago I had 3 MB left on my hard disk, and here's why: