The all-in-one with touchscreen. HP was actually the first manufacturer to introduce this concept to consumers about five years back with its TouchSmart computers. By now touchscreens are no longer an exotic feature, they're common, large and work quite well. Windows is finally designed with touch operation in mind. Can HP distinguish itself with its years of experience, will it be able to make the HP Envy 23 TouchSmart stand out from the crowd?