[QUOTE=Scoop;150685]I do the same and it's paid off several times, mainly to recover from a malware or virus intrusion. Routine cloning or imaging protects from the big-headache scenarios, HDD failures, infections, and user errors.
Another thing that's good about it is, it removes any apprehension about downloading something that probably is ok but one can't be 100% sure about it.
Also, making changes to the OS, Registry, anything that may dig a hole, as you said, can be easily reversed with a cloned HDD on the shelf that's ready to go.[/QUOTE]
Yup, agree 100%
Man some of those lessons were painful and a long time coming...:D