Hope this is really coming for X-mas 2009:
The gScreen Spacebook will boast two 15.4 in screens which can slide away to fill the space of a single screen when the laptop is being stored or transported.
Source: http://www.telegraph.co.uk/technology/6105506/Dual-screen-laptop-on-sale-by-Christmas.html [4]
Links:
[1] http://pulse.veltsos.com/category/it/hardware
[2] http://pulse.veltsos.com/category/it/innovation
[3] http://pulse.veltsos.com/category/it/portable
[4] http://www.telegraph.co.uk/technology/6105506/Dual-screen-laptop-on-sale-by-Christmas.html