Dual screen = dual user computer
I sometimes find my wife wants to kick me off my computer to use Facebook or something else and I thought that Windows should be able to switch my computer to a dual user mode where I can have 2 mice plugged in and at the click of an icon my two screens could switch to separate user interfaces. Most computers have plenty of processing power and dual screen video cards are very common. This could work with wireless screens (tablets) or any other video device. Audio could be tricky but could easily split a 5.1 into 2 stereo channels or split stereo into 2 channels. I think this could be a great benefit to families that have children sharing computers for homework and other things. I would like to see this as a Microsoft Windows integration.
Reward: Public recognition for the idea and free product would be great.