I'm really not sold on touch screens as an input for laptops. Simply put, mouse/keyboard or trackpad/keyboard work very well for that form factor with touch working very well for something that you can pick up and hold like a book. You can't do that with laptops.
Tablets and hybrids are another story - touch screens are very well suited for those and create a very nice user experience. That being the case, I'd just as soon keep my laptops non-touch screen.