Wouldn't it be nice to play games without a cord stretching across your living-room floor, especially if you have little kids or large dogs in your household? Nintendo's Wave Bird isn't the first wireless controller ever brought to market, but it's a whole lot better than what came before. You may remember a brief fad a few years ago with spotty infrared devices. These units failed because they were a lot heavier than standard controllers, and also because they required a direct line of sight between the controller and the infrared receiver. The Wave Bird is much lighter (it weighs a bit more than a regular controller) and uses radio frequency signals for reliable game control at distances of up to 20 feet. Unless your playing on a stadium-size TV screen, that should be more than enough. The unit will last for about 100 hours of use on just two AA batteries and has 16 channel frequencies, so you'll easily be able to hook up four controllers without interference.