Whenever I feel I'm almost done, I save a copy of my session, and turn off all my eq's, comps etc. It's a real eye opener, and my last project, it was a real "wow!!" experience! It was a jazz drummer and the unprocessed sound was just phenomenal. The drummer (and he's a pro!) looked at me and said, "Is that me??"
Sometimes getting rid of all your 'fixes' lets you know how much you haven't been 'fixing'.