"If you're in the middle saving a file from some application and pull the power plug....."
Since Windows XP, windows has supposeldy been able to cope with that.
The spiel from the M$ evangelists at the pre-launch meetings was that on pulling the plug, windows could take an immediate snapshot and preserve open document files for later recovery
In the demos they gave us it worked, and many times in real life office has produced recovered files following crashes...but I'd never like to have to rely on it
You never know with those Microsoft demos, just how much is smoke & mirrors