"CCleaner (or Crap-Cleaner as it is also known) describes its function in the title of the software. Simply put, CCleaner helps you get rid of junk and unwanted files from your PC. There are three different functions which the software can perform, two of which are very useful indeed:"
I have been using and recommending CCleaner for a while now, I like it and it does work. The new version even has an system restore button.