The Windows Phone 7 emulator has already yielded a few treasures - perhaps treasures isn't the right word? - so maybe you're hankering to take a look around yourself.
If you're so inclined, Engadget has a nice walk-through of how to get the emulator up and running. If that seems like like too much work, there's a 10-minute video which should give you an overview of the basics. [Engadget]