Still an amazing hack today and I love it. However, I heard Apple are developing a touch screen MacBook this year, and I simply don't get why they're doing that. I don't know what's worse, the ergonomics or the fingerprints.
I have been around touch screen Windows laptops for I don’t know how many years now, and I have never felt even the slightest compulsion to touch the screen.
It might be a generational thing; my kids get touchscreen laptops from their school, and they interact with them almost exclusively by touching the screen. I agree, I'd much rather use a mouse (or even better, a trackball; i wish most laptops still had those)