Vista UAC

Unfortunately, I haven't had the opportunity to mess with Vista yet. (I missed my shot at the second beta. :( ). One of the features I've been looking forward to is UAC (User Account Control).
I've tried using Least Privileged Account practices in XP and it is a real pain. I actually tried multiple times. The first time I gave up immediately. The second time took slightly longer to make me cry "uncle". I never made it more than a week, though.
I mention it because of this post on ZNet:

Should Apple be making fun of Vista UAC? by ZDNet's George Ou -- Windows Vista UAC (User Account Control) has an additional security feature called Secure Desktop that hardens the UAC privilege escalation prompt, but some people seem to be upset with this feature because they say it's annoying. Apple has even gone as far as making a new TV commercial out of it with "PC" being bossed [...]

UAC is the right move by Microsoft. It's at least five years too late but now that it is here we need to encourage people to use it, not spread FUD and scare them away. I'm not bashing Apple. I think they have some great products. But shame on them for this cheap marketing trick.