Clean All Those Crap Files with CCleaner

While Windows built in Disk Cleaner utility is okay - nothing, I mean nothing compares to the junk file cleaning power of CCleaner. This utility is one of the programs I cannot live without.
CCleaner (formerly known as Crap Cleaner) will clean the following -
Temporary files, URL history, and cookies from all your web browsers.
Windows Recycle Bin, Recent Documents, Temporary files and Log files.
Removes temp files and recent file lists from many third-party applications.
Advanced features to remove unused and old Windows Registry entries, including File Extensions, ActiveX Controls, ClassIDs, ProgIDs, Uninstallers, Shared DLLs, Fonts, Help Files, Application Paths, Icons, Invalid Shortcuts and more... also comes with a comprehensive backup feature.

Windows will run faster and CCleaner frees up valuable disk space and, in actuality, will keep your computer clean from spyware by cleaning out folders on your system that can harbor them.

Download it here.