Keith posted an interesting article about Vista security.
He talked about the positive stories around Vista Security and the fact that even through we have millions of desktops to protect, Vista is a highly secure platform. See “Vista's Despised UAC Nails Rootkits, Tests Find” by John E. Dunn. This of course got picked up on Neowin.
Here is his sceencast which shows off User Access Control. Go to the following location to see the full post.