Just Dance 2 is the perfect party game. If you'll play it occasionally with your friends, you'll enjoy it in a great way, but if you are looking for a strong single player experience... well! Just look for something else.
Overall, despite the sometimes finicky Wiimote controls, Just Dance! is a fantastic dance game for the Wii and one I certainly recommend for all you dance freaks out there or anyone looking for a good work-out game.