Russell Davies surveys new projects geared towards life with multiple screens:
[D]esigners are becoming increasingly interested in secondary attention, the stuff you're only half-watching, half-listening to, not even really noticing. They're thinking about this because of the coming superabundance of screens. We're seeing the first trickles already, and new behaviours are starting to emerge — behaviours that need exploiting. It started when media people noticed that TV viewers were often looking at their computers at the same time and realised that there might be an opportunity for "coviewing" applications — apps that complement what is happening on the TV.
The Dish 