Very nice utility to help you visualize what's taking up space in your hard drive. If you are running low on space, use this before you start deleting 1 KB large files.

I have no personal need whatsoever to justify buying this little screen capture utility for Mac OS X, but I thought it was genius in it's simplicity and obviousness - yet no one did it before - to warrant a link. I can see a lot of people loving this.