Marketing 101 - if you can influence people's perception of something enough, it will become the reality of the situation for them regardless of the truth.
Enter the Mojave Experiment.
What happens when you take 140 people, 22 hidden cameras and show them a demo of a new Operating System from Microsoft called "Mojave". Oh, and there is a catch too. Mojave is actually Windows Vista.
The site is built using Silverlight and allows you to "fly through" the video clips with your mouse wheel. Hard to describe but a stunning visual when you actually see it.
Check out the site here.