I love touch on my netbook, and often find myself using touch and keyboard instead of keyboard and mouse. With a larger screen like a desktop I could see that not being the case, but with smaller screens it is oddly more natural to move from typing to prodding than typing to the track-pad.
That being said, I was not converted overnight. The first few days I found the touch capability to be mostly annoying an inaccurate, but after that I found it to be quicker and easier than moving to the track-pad, finding the mouse on the screen, scrolling over, and then clicking. Now it is just 'look', 'poke', 'done'. Still, for precision work, such as audio/photo editing (cant really do video editing on a netbook, so I am not sure what that experience would be like) a mouse is a definite necessity.