I'm wondering if this has ever been tried... Or if it's even plausible to do...
Can I game on one screen (windowed full screen or otherwise) while someone else uses my computer on the other screen(via mouse and keyboard)?
I would have an HDTV set up with my pc monitor, where on the tv I would run a game while my girlfriend runs her office apps (or Facebook or anything) on the other screen without us interfering with the others activity.
Never heard of that being done, and I don't think it's possible unless you can find a way to run two instances of your OS on the same machine. Doesn't mean it's impossible, though - I've never really looked into it.