Completely with you on the use of SCM systems outside the tech sphere. I used File Hamster to protect the office files (spreadsheets, documents, etc) on my last project - seems to work quite well. The nicest feature is the balloon popup that appears bottom-right, which allows you to enter comments on a recent save. This seems to tie in nicely with the wow feature.

BTW The reason I'm 18 months off the pace on this post is that I just read about this in the book. Good job, Rands!