I honestly can't wait to get my hands on Android, Google's latest offering in the mobile arena. The interface itself is nothing revolutionary - after all, the iPhone is wonderful in terms of it's GUI. What excites me about Android is the openness of it. The whole platform is open-sourced, meaning that we're not going to have any of the restrictions previously imposed by money-hungry monopolists.
That's not to say that it won't be secure. Of course security measures are built in, and all the apps run on a Java VM. But the owner of the device will have far more control, and if a provider decides to lock you out of particular options - well, rest assured that someone will have a hack available to fix it!