Excellent FPS with multiplayer goodness!
Now that you've got your Wii Zapper from the Link's training pack-in, here's a great game at a good price to make further use of it. The level-related enhancements make for long-term enjoyment. Get a mate with a second zapper and make the world safer from the terrorist threat. Rewards sharper shooting more than the RE games, but watch you don't pepper the hostages with the spray on rapid fire.