1. An Applescript or basic widget smart enough to open a local directory at a predetermined time, mount a remote mirror, check both file creation dates and update/backup files in both places.
2. Another widget that runs in the background on my Powerbook. When it senses that I’ve mounted a predetermined volume (my backup volume), it backs up the volume based on file creation date.

Yes, I have Retrospect, and No, I don’t like it. I’d like to not have the massive overhead and all that crud floating around my system- I just want a simple daemon quietly humming in the background which is smart enough to back my stuff up without hosing my machine or costing $200. Is that too much to ask?