It's a personal planetarium. Point it at an object in the night sky, and it will tell you what you're looking at, from a database of 6,000 objects. It'll even help you find something you're looking for. Turn it on and you'll get a list of the 10 coolest things you can see right now. It uses GPS to find where you are, and then magnetic and inertial sensors to know where you're pointing... Best yet, it's updateable.
Out in March, and no prices yet.