I like to back my files up very often; however, I'm having trouble finding a method I can stick with.

Usually when I backup, I back one whole folder. (Ex: My Documents)
What I've been doing in the past that seems to work the best (with one exception) is to make a briefcase folder on a removable zip disk. Them I copy the folder I'm backing up into it.

I like briefcases because after the folder has been backed up once, the next time I back it up I only have to replace the files that have been changed (added, deleted, modified) since I last backed up.
Vs. having to delete the whole older backed-up folder and re-copy the whole newer folder back again.
Or deleting and remaking a whole backup file. And personally I’d rather not use a single file to backup many files. (Even if you can compress it) There is just not a good enough way to view the contents of your files.

Now, my only real problem with briefcases is that MS likes to mess with my database files! It likes to add extra files and make changes to my databases. Most of these MDB files I just want to backup and never touch them again. I don’t like having to make extra files for every database file and all this other crap like “you might see extra fields in your tables”. But I like briefcase's because they simply show you if a folder/file "needs-updating" or is "up-to-date".
(Although for some reason a briefcase wont remember my folder settings )

Does anyone have an easy and effective way of backing up that you use and like?
And it doesn’t require you to re-backup allover again each time.