Apple's touchscreen keyboard is great once you get the hang of it. Who ever would have thought we'd get used to a device with no hardware keys? Best about it is the fact that the keyboard adjusts based on how you are holding the phone, and only shows up when you need it.
Looks like Apple has acquired the patent related to a touchscreen keyboard (like what's found on the iPhone, iPad and iPod Touch), and it seems a little different:
A method of operating a touch screen to activate one of a plurality of virtual keys is provided. A touch location is determined based on location data pertaining to touch input on the touch screen, wherein the touch input is intended to activate one of the plurality of virtual keys. Each of the plurality of virtual keys has a set of at least one key location corresponding to it. For each of the virtual keys, a parameter (such as physical distance) is determined for that virtual key that relates the touch location and the set of at least one key location corresponding to that virtual key. The determined parameters are processed to determine one of the virtual keys. For example, the determined one virtual key may be the virtual key with a key location (or more than one key location, on average) being closest to the touch location. A signal is generated indicating activation of the determined one of the virtual keys.
This one seems to do things based on how you position your fingers, or how your presses work, so it's slightly different.