Handwriting recognition -- I use it all the time. For emails and such, it works great. ..better/faster than the slide-out keyboard.
I will also point out that MSFT is way ahead of Apple in the tablet UI. To apples credit, they do get points for 'keeping it simple.' --a very successful approach for their customer base. The ability to flick the screen around, AND cut, paste, copy . . .all with screen gestures is likely too much for the apple user to learn w/o frustration.
