The latest update for the Google Mobile iPhone app has a very cool feature: voice search. You just open Google Mobile, lift the phone to your head and say what you want to find. That’s it. When I said “What is the latest book by Neal Stephenson?” I got:
Your iPhone knows where you are, so you can ask about places and events nearby, and Google Mobile will hook you up.
P.S.: To take screenshots on the iPhone, press the sleep/wake + home button. The screen will flash to let you know it worked.