ThinkComputers published a review of the Lenovo ThinkPad W700ds notebook with 2 screens.
Quote from the review: "Laptops keep on getting more powerful, that means many people are using them as desktop replacements. There are many benefits of using a laptop instead of a large tower. First off it takes up far less space, you can take it from place to place with you, and you don't have to worry about a keyboard and a mouse. One thing I've always missed when using a laptop is screen space, I currently use two 24-inch screens at my desktop so going down to 1 screen is a change. Lenovo has come up with a solution for this with their ThinkPad W700ds laptop that has an additional pull-out 10.6-inch screen! Let's check i t out!"
Read the full review on ThinkComputers.