Hazel

This is a pretty innovative Mac OS X utility for robotic filing which I've been using since the early 2.0 betas; it's great. I had already given up trying to get everything off my desktop by finding just the right cubbyhole for it. Instead I had started a chronological dump bin system for anything but obviously project-related files. There's a large middle ground of miscellaneous "Might want this later" attachments and ephemera which 120 GB+ hard drives seduce one into keeping around... but one can get pretty distracted with all that interesting junk on one's desktop. Now I'm letting Hazel clean it up for me.