A few years back, it was possible to buy some sort of frame that went over a monitor and made it sort of touch screen, it would not work with a laptop because yo would not be able to close the lid and I doubt the product have been updated for wide screen.
Not that i use my laptop very often, but I am not sure if I would want a touch screen laptop, I certainly would not want my desktop to be touch screen.
Adrian
Desktop machine now powered by windows 7 pro 64bit , laptop by ubuntu
On ADSL24 using C&W network.