A 20 inch touchscreen monitor might be the last thing on your list of computer items needed this year but if you are using Windows 8 and planning to buy a monitor then you are in the right place.
Having touch input actually helps. If you have used a touch based laptop or a hybrid, you will definitely understand the enhancement touch input actually overlays the UI.
AOC recently introduced a 19.5 inch touchscreen monitor this month which is priced not very far from a normal 20ish inch computer screen. The LED monitor comes at a low price tag and consumes just 18W of power in running mode.