Program that helps you see how your hard disk space is taken up?

[Raiyne]

I remember there was an application that showed you which folders of your hard disk took up how much space and how much a certain file format there is etc. Helps you see where you need to clear up space in.

Would really appreciate it if someone could help me find this.

[Ronin]

http://windirstat.info/ <<< good but sunburst diagrams are way better; also it does not allow to navigate into folders.

http://w3.win.tue.nl/nl/onderzoek/on.../sequoiaview// <<< Does allow for filter-rules

http://www.steffengerlach.de/freeware/ <<<<< Scanner; liked that one. (Doesn't sort by formats though)

http://www.jgoodies.com/freeware/jdiskreport/ < junk xD