I like to have my laptop connected to an external monitor. I often find the 2 screens helps productivity. But there are times where I'm doing something on one screen and the monitor just sits there unused for long periods of time. Or, I'll go sit on my couch in the living room and my big screen TV, which has a computer attached to it, sits there off and I wonder if there's something that could be displayed on the screen which I might find informative or useful. (I often use it to play internet radio stations, but the screensaver just shows on the screen)
What can I use the idle second screen for? Is there something which might be interesting to show on it?
The only things I've come up with are the various web things at Digg labs, or installing and running a distributed computing thing like Folding@Home - but I feel like that'd be unnecessary load on my already aging computer, and its poor little processor wouldn't really contribute much.