It is interesting to see just how much CCleaner removes over a period of time. I did have another cleaner (from Webroot) which had a continuing statistics monitor and it was amazing to see the amount of junk removed. Add this little monitor and you will have the perfect program.
Add into next version a cumulative total of space cleaned. Webroot's "Window Washer" has this feature & it is great to know just how much space is saved over time.
CCleaner appears to clean far more thoroughly than Window Washer.