I was already aware of that - but what was absolutely new to me was that you can take an existing install and boot another machine from it. I always thought that was just possible because of the limited amount of hardware options in Apple land.
If MS really managed to get that done more or less reliably, I'd consider it a massive leap forward - because, seriously, failing computer hardware (and we all know it happens) was plain horror when you had to get back up and running quickly. Even in case you had backups for everything, re-installing the system and all your software (add authorisations to the scenario) has always been the proverbial pain in the butt and easily takes anything between a full day amd up to a week until you really have everything running smoothly again. Being able to start from at least some basically configured system with the minimum of software you need is pretty much a godsend already (and well, waiting for a few drivers to install really isn't that much of a hassle).
This very thing is really one of the major things that made me appreciate OSX. I went through one complete computer fail, the aforementioned fan issue and a system migration - and it simply was a matter of a few minutes every time. If Windows could get me there as well, even if it'd be just more or less there, that'd be just another reason to think about switching back (will happen anyway once I need a new laptop, which will rather be a nice convertible instead of that horribly overpriced Apple stuff). Now, if I only wasn't such a Logic afficionado...