An Acer laptop, with dual 15-inch screens has been spotted. That is, one 15-inch screen would act as a display and the other 15-inch screen would replace the keyboard and trackpad. That would make for one gigantic dual-screen laptop.
Much is unknown about the Acer dual-screen laptop but it carries on the same idea of the Microsoft Courier and the Toshiba Libretto W100 (which has dual 7-inch screens). TechReviewSource says the laptop isn't expected to ship until Late 2011 so any rumored specs are bound to be different.