I've been able to do that in Linux for some time now. Not with IE of course, but Firefox and any other program I have open.
This feature was handed over from Vista to W7. It’s not something new and amazing. However, I have always liked this feature.
As far as selling LINUX, I hate Linux. It is the OS for our PASON system and it seriously SUX. Not only is it slow, but it crashes, locks up, loses data every hour on the hour, but it is the only system of it’s kind and we are forced to live with it. I would love to see W7 take over and soon.