windows - What's a good tool to find where my hard drive space is being used?

I am looking for a tool that will tell me where my hard drive space is being used.

I used to use one called Scanner.exe (I think that was the name) that was written in Delphi. But I have lost it and can't find it again.

Does any one know of a good free windows tool that tells you were your hard drive space is being used. (Aside from selecting properties on a bunch of folders.)

Answer

WinDirStat is rather nice. You can mouseover the boxed area and specifics are shown on the status bar at the bottom.