Bert, Thanks for the feedback. CrashPlan does allow for versioning of backups.
And you've convinced me to reconsider disc images. What software do you recommend to do this as an automated task? (I'll save to different computer on my network, and then physically copy those to flash drives since they'll be too large to save to CrashPlan over my slow DSL connection).
If you are looking for commercial, I like Acronis as they have a proven solution for dis-similar hardware, or even P->V (Physical to Virtual) restores.
There are open-source solutions as well, but none are what I would call end-user friendly.
