Joe Hatch.

Before Joe Hatch came to our class and told us about CCleaner, my computer was riddled with unnecessary programs and files which had, without my direct knowledge, been messing up my computer. However, upon listening to Mr. Hatch's presentation, I downloaded CCleaner and it freed my computer from a surprisingly large amount of junk. I definitely plan to use it every few weeks in order to keep my laptop from crashing.