How 'bout a 'Shutdown PC When Done' option on the MAIN screen, instead of in the advanced options? Many times I like to run CC while still doing things, so going in to uncheck that is annoying.
I swear by CCleaner (have used it for many years) so I wanted to give 'fraggler a try but, like joeparkerjr, it claimed it would take a day to finish, and I'm only using 29GB out of 189GB on my drive (I have 64b W7).